Buffalo Bayou and the Cistern: What Houston Buried and Rediscovered

Beneath Buffalo Bayou Park in downtown Houston, fifteen feet underground, there is an accidental cathedral.

In nineteen twenty-seven, the city of Houston built a concrete underground cistern to hold drinking water for a growing metropolis. It is two hundred twenty-one feet long and reinforced by two hundred twenty-one concrete columns arranged in precise rows. At its peak it held fifteen million gallons. The city used it for eighty years, then decommissioned it in two thousand seven. For a period it was simply forgotten, sitting below a park under the bayou as the city changed around it.

When planners began renovating Buffalo Bayou Park in the years after that, they opened the cistern during site work and found that it had collected a quarter inch of standing water. The water was so still and so evenly distributed that it produced a near-perfect mirror image of the two hundred twenty-one columns above it. The reflected columns extend downward in the darkness with enough depth and precision that the effect is spatial: you are standing in a room that appears to be twice as tall as it is.

The city designated it as a public art space in twenty sixteen. Exhibitions have been mounted there, but the cistern itself is the work. It is not on most Houston visitor lists. It is listed on no significant tourist route. It is under the ground, under the park, under the bayou, and it is one of the more genuinely strange rooms in any American city. You have to know it exists to find it. Now you know.