Join Huell as he learns about the sometimes-controversial history of this California landmark and gets a very special tour, including a vertigo-inducing trip to the very top if the spire which is set against the San Francisco skyline...

We are talking about the The Transamerica Building, one of the most distinctive structures on the globe. With its 48 stories and 212-foot spire, the Pyramid is San Francisco's tallest building and is considered the most photographed building in the world. With 18 elevators, 3,678 windows, approximately 16,000 cubic yards of concrete and 1500 people working inside, it is truly a spectacle.