New York | United States
Actually a 22 acre "city within a city", Rockefeller center was built by John D Rockefeller Jr at the height of the Great Depression. It was the US's first retail/entertainment/office center of 19 buildings and declared a National Landmark in 1987. Most interesting in this space is the GE Building offering a Top of the Rock observation tower (actually taller than the Empire State Building's) and Rockefeller Plaza.
New York | United States
This ice skating rink is set in the heart of Central Park and is a star player in numerous Hollywood movies. Located at 59th Street and 6th Avenue, it has spectacular views of the skyline of Manhattan.
California | San Francisco | United States
This is the central shopping square in San Francisco and offers a great plaza for people watching and a coffee in the summer and an ice skating rink in the winter.