When it was first built in 1947, the original John Hancock Insurance tower (now known as the Berkeley Building) was the only "skyscraper" in the city of Boston. These historic deco style doors are manufactured out of nickel and brass. We have extensive knowledge and experience in the proper operation and maintenance of both the revolving door as well as the balanced doors. We also have an inventory of parts that are no longer manufactured. As seen in the above photo, the main entrance.