Hyatt Regency Houston is a 30-story high-rise hotel located in downtown Houston, Texas, United States.The hotel, part of the Hyatt hotel chain, was designed by architect John Portman and architectural firm JV III and was opened to guests in 1972. At 401 ft (122 m), Hyatt Regency Houston is the city's tallest hotel The hotel is topped by a revolving restaurant known as "Spindletop".