811 Main is a 630 ft tall skyscraper in Downtown Houston, Texas. It was completed in February 2011 and has 46 floors. It is LEED Platinum Certified. When it was completed, BG Group Place became the 15th tallest building in Houston and features a skygarden on the 39th floor. It is the tallest building built in Houston in 23 years, after the Heritage Plaza was completed in 1987. The naming was done when BG Group Plc became an anchor tenant and leased 164,000sq ft of space. The primary monument & all core signage for the facility was built by Ad Display Sign Systems. Current major tenants include:Crestwood Midstream Partners KPMG Baker Hostetler Latham & Watkins Quorum Citi Kayne Anderson Reed Smith