It’s Memorial Day, the official launch of summer which means one thing in New York City: a sudden flurry of things to do. Here’s our list of alternative activities we think you should check out over the next few days!

1. Navy Dive Tank in Times Square

U.S. Navy photo by Mass Communication Specialist 2nd Class Charles Oki/Released

It’s Fleet Week! There will be a dive tank right in Times Square from the U.S. Navy – the public can’t take a dip but you’ll see U.S. Navy divers jumping in. You can check out their gear, make faces, even play tic-tac-toe with them, and draw on the glass tank. Thursday, Friday and Saturday May 24, 25 and 26 from 10 AM To 5 PM.