HOUSTON - You can now take a tour underground in Houston at the Buffalo Bayou Park Cistern.
For decades, it has gone unused but that changed Friday.
The cistern used to be the city's underground drinking reservoir, built in 1926. It was rediscovered in 2011 while the Buffalo Bayou Partnership was in the middle of the park's $58 million renovation.
The space has been updated with lighting, stairs and rails to keep visitors safe.
The cistern will be open Thursdays and Fridays from 3-7 p.m. On weekends, it's open from 10 a.m. to 5 p.m.
Admission is $2 for a 30 minute tour. Visitors get in free on Thursdays.
Reservations are required. Click here to sign up.