HOUSTON -- So, many of you have explored downtown Houston, but do you really know all it has to offer? Have you been into H-Town's "underground" system? The Downtown Tunnel System is a mystery to many Houston residents and people are surprised to see there is a mini-city beneath their feet! Check out what we uncovered in "Hidden Houston."
This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.