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. 

Barcelona – Spain's enchanting capital, second largest and most populous city. It is a huge city that vibrates with life, and there’s certainly not another city in the country to touch it for its sheer style, looks or energy. It is one of the world's leading tourist, economic, trade fair and cultural centers, and its influence in commerce, education, entertainment, media, fashion, science, and the arts all contribute to its status as one of the world's major global cities. Barcelona is home to masterpieces of many great architects – the most famous of which is Antoni Gaudí.