101 Clarendon Street, also known as Columbus Center, was a proposed skyscraper planned for Boston, Massachusetts.

Continuing on the trend established by the Prudential Tower in 1964, the completed building would have concealed more of the Massachusetts Turnpike (I-90) by utilizing air rights above it.

"[2] The project was put on what was then a temporary hiatus in March 2008 with the developers citing a need for about $35 million in state funds and loans, some of which had been denied ironically because construction had stopped.

[3] In 2010, the main financial investor in Columbus Center, the California Pension and Retirement System (CalPERS), began to extricate itself from the development.

[2] Winn was later charged with making illegal campaign contributions totaling $61,000 over the course of eight years in an attempt to win approval and support for the Columbus Center project.