HOUSTON, Texas -- What used to be basements for buildings are now tunnels that connect more than 90 downtown city blocks ... You can find a map of the tunnels here.

Welcome to downtown Houston's tunnel system ... Specifically, the district published and updates annually a map of the tunnels, which are broken into nine color groups. It also has installed ...

I’m from Houston ... here’s a map – you can find them in any of the buildings!” Angie Bertinot, with the Downtown District, said. First built back in the 1930’s, the tunnel has ...

Thousands of people use the pedestrian tunnels ... downtown near the Pierce elevated. There’s more information about the tunnels, and a map, in a link on our website KUHF dot Org. Jim Bell ...

On a weekday afternoon, if the sidewalks in downtown Houston look especially bare, it could be because all the pedestrians can be found beneath them. Houston's historic tunnel system is a maze of ...

Since moving here in the late 1980s, the Pittsburgh native began leading walking tours of Houston's urban landscape. Her tour groups would often descend into downtown's labyrinth of tunnels for a ...