Last weekend, the National Building Museum in Washington, D.C., opened a 10,000 square-foot ball pit to the general public, and everyone cheered that, finally, someone made their childhood dreams come true.

The installation, called “The Beach,” is literally two massive, gallery-white pools, built by Brooklyn design firm Snarkitecture, filled with plastic balls that fully grown adults can actually play in. It is reportedly very large and very fun, and is accompanied by a few dozen beach chairs.

Just behold its splendor:

By Noah Kalina

The installation will remain open until September 7, after which it will be dismantled and its visitors once again forced to confront the chill of adulthood. In the meantime, the ball pit’s child-like whimsy and nostalgia-inducing fun time is projected to considerably improve Washington, D.C.’s negative, cynical image.