7. One Worldwide Plaza $1.7 Billion

Architecture buffs are likely familiar with Worldwide Plaza, designed by David Childs of Skidmore, Owings and Merrill with a large plaza between the three buildings of the complex.  Transit riders will know it because it’s also the entrance to 50th Street A/C/E stop, which includes the fun city-oriented window artwork. But from the skyline, it may be the pyramidal topped building in Midtown you always wondered about.

One Worldwide Plaza sold for $1.7 billion in 2007 to Deutche Bank, but just two years later it was sold again at just $600 million. Today, the building is home to CBS.