Boston is the capital of and largest city in Massachusetts, and is one of the oldest cities in the United States. The largest city in New England, Boston is regarded as the unofficial "Capital of New England" for its economic and cultural impact on the entire "New England" region. The city proper had a 2009 estimated population of 645,169, making it the twentieth largest in the country. It is also the anchor of a substantially larger metropolitan area called  "Greater Boston", home to 4.5 million people and the tenth-largest metropolitan area in the country. Greater Boston as a commuting region includes six Massachusetts counties:  "Essex", "Middlesex","Norfolk", "Suffolk", "Plymouth", "Worcester", northern "Bristol" County, all of "Rhode Island" and parts of "New Hampshire"; it is home to 7.6 million people, making it the fifth-largest Combined Statistical Area in the United States.

Houston is the fourth-largest city in the United States of America and the largest city in the state of Texas. As of the 2009 U.S. Census estimate, the city had a population of 2.3 million within an area of 579 square miles (1,500 km2). Houston is the seat of Harris County and the economic center of the Houston–Sugar Land–Baytown metropolitan area—the sixth-largest metropolitan area in the U.S. with a population of approximately 5.9 million. The city’s relatively compact Downtown includes the Theater District, home to the renowned Houston Grand Opera, and the Historic District, which pairs 19th-century architecture with trendy restaurants.

Philadelphia - Pennsylvania’s largest city, is notable for its rich history. It is the fifth-most-populous in the United States, with an estimated population in 2014 of 1,560,297. In the Northeastern United States, at the confluence of the Delaware and Schuylkill River, Philadelphia is the economic and cultural anchor of the Delaware Valley, a metropolitan area home to 7.2 million people and the eighth-largest combined statistical area in the United States. It is also home to many national historical sites that relate to the founding of the United States. Independence National Historical Park is the center of these historical landmarks being one of the country's 22 UNESCO World Heritage Sites.Independence Hall, where the Declaration of Independence was signed, and the Liberty Bell are the city's most famous attractions.

Detroit is the largest city in the U.S. state of Michigan and the seat of Wayne County. Detroit is a major port city on the Detroit River, in the Midwest region of the United States It was founded on July 24, 1701, by the Frenchman Antoine de la Mothe Cadillac. Its name originates from the French word détroit for strait, in reference to its location on the river connecting the Great Lakes.

San Francisco, officially the City and County of San Francisco, is the financial, cultural, and transportation center of the San Francisco Bay Area, a region of 7.5 million people which includes San Jose and Oakland. The only consolidated city-county in California, it encompasses a land area of about 46.9 square miles (121 km2) on the northern end of the San Francisco Peninsula, giving it a density of about 17,179 people per square mile (6,632 people per km2). It is the most densely settled large city (population greater than 200,000) in the state of California and the second-most densely populated large city in the United States after New York City. San Francisco is the fourth most populous city in California and the 13th most populous city in the United States, with a population of 805,235 as of the 2010 Census. The San Francisco-Oakland-Fremont metropolitan area has a population of 4,335,391.

Toronto, a prominent centre for music, theatre, motion picture production, television production, is home to the headquarters of Canada's major national broadcast networks and media outlets. Its varied cultural institutions, which include numerous museums, festivals and public events, entertainment districts, national historic sites, and sports activities, are key attractions to the over 25 million tourists that visit the city every year.  Toronto is well known for its skyscrapers and high-rise buildings, in particular the tallest free-standing structure in the Western Hemisphere, the CN Tower. As Canada's commercial capital, the city is home to the Toronto Stock Exchange, the headquarters of Canada's five largest banks, and the headquarters of many large Canadian and multinational corporations. Its economy is highly diversified with strengths in technology, design, financial services, life sciences, education, arts, fashion, business services, environmental innovation, food services, and tourism. Toronto is placed among the Global Leaders in the Global Financial Centres Index, and is also consistently rated as one of the world's most liveable cities by the Economist Intelligence Unit and the Mercer Quality of Living Survey.

Dallas is the third-largest city in Texas and the ninth-largest in the United States. Divided between Collin, Dallas, Denton, Kaufman, and Rockwall counties, the city had an estimated 2009 population of approximately 1.3 million, according to the United States Census Bureau. The city is the largest economic center of the 12-county Dallas–Fort Worth–Arlington metropolitan area that according to the March 2010 U.S. Census Bureau release, had a population of roughly 6.5 million as of July 2009. The metropolitan area is the largest metropolitan area in the South and fourth-largest metropolitan area in the United States.

Washington, D.C., formally the District of Columbia and commonly referred to as Washington, the District, or simply D.C., is the capital of the United States founded on July 16, 1790. The U.S. Constitution allows for the creation of a special district to serve as the permanent national capital. The District is therefore not a part of any U.S. state and is instead directly overseen by the federal government. Within the District, a new capital city was founded in 1791 and named in honor of George Washington. The City of Washington, along with Georgetown and outlying areas within the federal district, were placed under a single, unified government following an act of Congress in 1871. It is for this reason that the city, while legally named the District of Columbia, is known as Washington, D.C. The city shares its name with the U.S. state of Washington located on the country's Pacific coast.

Charlotte is the largest city in the U.S. state of North Carolina and the seat of Mecklenburg County. In 2009, Charlotte's population was estimated by the US Census Bureau as 709,441 (the Charlotte Chamber of Commerce insists it is higher in mid-2010, at 756,912), making it the 18th largest city in the United States based on population. The Charlotte metropolitan area had a 2009 population of 1,745,524. The Charlotte metropolitan area is part of a wider thirteen-county labor market region or combined statistical area with a 2009 estimated population of 2,389,763. Residents of Charlotte are referred to as "Charlotteans". $$https://www.youtube.com/watch?v=Qwn0Ni9G5ow$$

Newark is the largest city in New Jersey, United States, and the county seat of Essex County. Newark has a population of 278,154, making it the largest municipality in New Jersey and the 68th largest city in the U.S. Newark is located in the heart of New Jersey's Gateway Region. It is approximately 8 miles west of Manhattan. Its location near the Atlantic Ocean on Newark Bay has helped make its port facility, Port Newark, the major container shipping facility for the New York metropolitan area, and the largest on the East Coast. It is the home of Newark Liberty International Airport, one of the first major, and now one of the busiest, airports in the United States. Newark is home to major corporations such as Prudential Financial and PSE&G, and well as several major universities such as Rutgers University and New Jersey Institute of Technology, cultural institutions, and sports venues.

Tampa is a Gulf Coast Bay city in the U.S. state of Florida. It serves as the county seat for Hillsborough County. Tampa is located on the west coast of Florida. The population of Tampa in 2000 was 303,447. According to the 2009 estimates, the city's population had grown to 343,890, making it the 54th largest city in the United States. The current location of Tampa was once inhabited by various indigenous cultures, most recently the Tocobaga. It was spotted by Spanish explorers in the early 16th century, but there were no permanent American or European settlements in the area until 1824, when the US Army established a frontier outpost called Fort Brooke at the site of today's Tampa Convention Center. The village of Tampa began as a small group of pioneers who settled near the fort for protection from the Seminole population in the area.

Atlanta is the capital and most populous city in the U.S. state of Georgia. As of 2009 it had an estimated population of about 540,922 people. The Atlanta metropolitan area, with more than 5.4 million people, is the third largest in the Southeastern United States and the ninth largest in the country. The Atlanta Combined Statistical Area, a larger trade area, has a population approaching six million and is the largest in the Southeast. Like many urban areas in the Sun Belt, the Atlanta region has seen increasing growth since the 1970s, and it added about 1.1 million residents between 2000 and 2008.  Atlanta is considered an "alpha-" or "world city", ranking 36th among world cities and 8th in the nation with a gross domestic product of $270 billion. It's economy is considered diverse, with dominant sectors including logistics, professional and business services, media operations, and information technology. Topographically, it is marked by rolling hills and dense tree coverage. Revitalization of Atlanta's neighborhoods, initially spurred by the 1996 Olympics, has intensified in the 21st century, altering the city's demographics, politics, and culture.

Chicago is the largest city in the state of Illinois. Its metropolitan area, commonly named "Chicagoland", is the 27th most populous metropolitan area in the world, home to an estimated 9.7 million people spread across the U.S. states of Illinois, Indiana and Wisconsin. Chicago is the county seat of Cook County, the second largest county in the United States by population. The city is renowned for its fascinating museums - including the Art Institute and its expansive collections, including noted Impressionist works; it is a city with an appetite for food, of course, but also for design, history, culture, finance, commerce, industry, technology, telecommunications and transportation.

San Diego, named after Saint Didacus, is the eighth-largest city in the United States and second-largest city in California after Los Angeles, with a population of 1,306,300 (Jul 2009) within its administrative limits on a land area of 372.1 square miles (963.7 km2). The city is located on the coast of the Pacific Ocean in Southern California. The urban area of San Diego extends beyond the administrative city limits with a population of 2,880,000. San Diego is also the county seat of San Diego County, the 5th largest county, by population, in the United States.   

Los Angeles, Spanish for "The Angels", is the most populous city in California and the second most populous in the United States, with a population of 4.06 million on a land area of 498.3 square miles (1,290.6 km2). It is the focal point of the larger Los Angeles-Long Beach Riverside  combined statistical area, which contains nearly 17.8 million people. This makes it the 12th most populous metropolitan area in the world. Los Angeles is also the seat of Los Angeles County, the most populated and one of the most multicultural counties in the United States. The city's inhabitants are referred to as "Angelenos".

Austin is the capital city of the U.S. state of Texas and the county seat of Travis County. Located in Central Texas on the eastern edge of the American Southwest, it is the fourth-largest city in Texas and the fifteenth most populous city in the United States. It was the third-fastest-growing large city in the nation from 2000 to 2006. Austin has a population of 786,386 (2009 U.S. Census estimate). The city is the cultural and economic center of the Austin–Round Rock–San Marcos metropolitan area, with a population of over 1.7 million, making it the 35th-largest metropolitan area in the United States.

Munich is the capital city of Bavaria (Bayern), Germany. It is located on the River Isar north of the Bavarian Alps. It is the third largest city in Germany, after Berlin and Hamburg. There are about 1.35 million people living within city limits, while the Munich Metropolitan Area (including the urban areas of Augsburg, Ingolstadt, Rosenheim and Landshut) is home to over 5 million people.The city is a major centre of art, advanced technologies, finance, publishing, culture, innovation, education, business and tourism in Germany and Europe, and enjoys a very high standard and quality of living. Munich's cultural scene is second to none in Germany, with the museums even considered by some to outrank Berlin in quality. Many travelers to Munich are absolutely stunned by the quality of the architecture. Although it was heavily damaged by allied bombing during World War II, many of its historic buildings have been rebuilt and the city center appears mostly as it did in the late 1800s including its largest church, the Frauenkirche, and the famous city hall (Neues Rathaus).

The City and County of Denver is the capital and the most populous city of the U.S. state of Colorado. It is a consolidated city-county, located in the South Platte River Valley on the western edge of the High Plains just east of the Front Range of the Rocky Mountains. The Denver downtown district is located immediately east of the confluence of Cherry Creek with the South Platte River, approximately 12.3 miles (20 km) east of the foothills of the Rocky Mountains. Denver is nicknamed the "Mile-High City" because its official elevation is exactly one mile or 5,280 feet (1,609.344 m) above sea level. The 105th meridian west of Greenwich passes through Union Station and is the temporal reference for the Mountain Time Zone.