Empire City

Empire City is a metropolis mentioned in "Story for Steven" by Marty to Greg and was first shown in "Same Old World" while Lapis Lazuli and Steven were visiting various locations on Earth. Steven, Greg, and Pearl visit the city in "Mr. Greg", and spend time at the Le Hotel. The city is located in Empire State, a clear play on New York State, AKA the "Empire State".

Trivia

 * Before his falling out with Marty, this was Greg's next stop on his Mr. Universe Tour.
 * Empire City is a fusion of New York, Paris, and Las Vegas.
 * "Empire City" is a common nickname for New York City
 * Its slogan "What happens in Empire City never sleeps" is a combination of another one of New York City's nicknames and the slogan of Las Vegas.
 * Empire City also has both the Empire State Building and a building that resembles the Eiffel Tower. Alternatively, It could reference Paris Las Vegas.
 * The name has been used for many other fictional cities.
 * It is the first major city featured in the show.