Via National Building Museum.

In a quest to one-up the big indoor maze they built last year, the National Building Museum will create the “quintessential summer experience” inside their Great Hall this summer: a beach.

No, they’re not bringing in gallons of sand and water. That’d be messy and gross! Instead, they’re teaming up with Brooklyn-based Snarkitecture to design and build the BEACH, a recreation of a beach-side scene complete with an “ocean” of recyclable translucent plastic balls. You know, like a ball pit.

The BEACH, which will open July 4 and run through Labor Day (September 7) will feature all of your essential beach scene staples: monochromatic beach chairs and umbrellas across a 50-foot wide “shoreline;” an “ocean pier;” a snack bar; beach activities like paddleball; and an endless shoreline created by a mirrored wall that “creates a seemingly infinite reflected expanse.”

“This exclusive transformation of the Museum’s historic Great Hall will inspire a sense of wonder and imagination,” Chase W. Rynd, executive director of the National Building Museum, said in a release. “Although it is bound to be an entertaining retreat from the summer heat for our visitors, it also turns our understanding of the natural environment on its head and offers us the opportunity to question our own expectations of the built environment and see where pushing the boundaries can take us.”

Tickets for the BEACH will run $10 for adult members ($5 for youth members/students/seniors) and $16 for adult non-members ($13 for youth members/students/seniors). More info here.