Located at 600 Montgomery Street, the Transamerica Pyramid is one of the most recognized landmarks in the city of San Francisco. The building was previously the home of Transamerica Corporation and is used in the company's logo. The building was designed by William Pereria and was finished in 1972. It measures 260 meters and upon completion was one of the five tallest buildings in America.
The building consists of 48 floors of office space and has over 3,600 windows. The first four floors contain 16,000 cubic yards of concrete and 300 miles of rebar. The foundation of the building took over 24 straight hours just to pour the concrete. It was originally designed to be 250 meters, but that proposal was not accepted by city officials. The Transamerica Pyramid is currently owned by Dutch insurance company AEGON, which was recently bought out by GE Capital. The building faced resistance when the plans were conceived in 1969. Not everyone liked the pyramid shaped design and several vulgar names were made used to describe the building by its detractors. The building was an intended terrorist target back in 1995 as part of the Bojinka plot but those plans were foiled by officials.