Tag: Four Allen Center

360 Gigapan Allen Center Circular Skywalk Night 1400 Smith St. Houston, TX 77002. Shot on 8-23-13. This shot includes the former Four Allen Center, former headquarters of Enron and now owned by Chevron. Copyright 2013 Douglas Robertson for Citizen Doug Productions. See this gigapan at Gigapan.com More gigapans on this site.