London – noisy, vibrant, diverse range of people, ideas and frenetic energy – is the capital and largest city of both England and of the United Kingdom. Considered one of the world's leading "global cities", the city remains an international capital of culture, arts, commerce, education, entertainment, fashion, finance, healthcare, media, professional services, research and development, tourism, and transport all contributing to its prominence. Today, among international tourists, London is the most visited city in the world!

New York City is the most populous city in the United States and the center of the New York metropolitan area. The city has a significant impact on global commerce, finance, media, culture, art, fashion, research, education, and entertainment. As host of the United Nations Headquarters, it is also an important center for international affairs. The city is often referred to as ''New York City'' or the ''City of New York'', to distinguish it from the state of New York, of which it is a part. Located on a large natural harbor on the Atlantic coast of the Northeastern United States, New York City consists of five boroughs: The Bronx, Brooklyn, Manhattan, Queens, and Staten Island. 

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.

The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. The state features two separate metropolitan areas - the eastern Boston metropolitan area and the western Springfield metropolitan area. Approximately two thirds of the state's population lives in Greater Boston, most of which is either urban or suburban. Western Massachusetts features one urban area - the Knowledge Corridor along the Connecticut River - and a mix of college towns and rural areas. Massachusetts is the most populous of the six New England states, the third most densely populated state in the United States, and also has the U.S.'s sixth highest GDP per capita. Culturally, historically, and commercially, Massachusetts has been significant throughout American history. The state has contributed many prominent politicians to national service, including members of the Adams family and of the Kennedy family. Originally dependent on fishing, agriculture, and trade with Europe, Massachusetts was transformed into a manufacturing center during the Industrial Revolution. During the 20th century, the state's economy shifted from manufacturing to services. In the 21st century, the state is a leader in higher education, health care technology, high technology, and financial services.

New Orleans is a major United States port and the largest city and metropolitan area in the state of Louisiana. The New Orleans metropolitan area, (New Orleans–Metairie–Kenner) has a population of 1,235,650 as of 2009, the 46th largest in the USA. The New Orleans – Metairie – Bogalusa combined statistical area has a population of 1,360,436 as of 2000. The city/parish alone has a population of 343,829 as of 2010. The city is named after Philippe d' Orléans, Duke of Orléans, Regent of France, and is well known for its distinct French Creole architecture, as well as its cross cultural and multilingual heritage. New Orleans is also famous for its cuisine, music (particularly as the birthplace of jazz), and its annual celebrations and festivals, most notably Mardi Gras. The city is often referred to as the "most unique" city in America.

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".