Williams Tower, one of Houston’s landmark skyscrapers, is for sale. The 64-story tower, formerly called the Transco Tower, is owned by a subsidiary of the Hines Real Estate Investment Trust, which purchased the property in 2008 from Kuwaiti owners for $271.5 million.

The building may sell for as much as $475 million, according to local media.

Houston-based Hines manages the building and has its U.S. headquarters there. Transco Energy is the biggest tenant, occupying 277,000 square feet, according to Real Estate Alert. The lease expires in 2014.

Hines built the 1.4 million-square-foot Transco Tower in the early 1980s.

"Last month, Hines’ U.S. Core Office Fund sold Shell Plaza in downtown Houston to an affiliate of Enterprise Products Co. for an estimated $550 million," the Houston Business Journal reported.