If you head out to visit Harvard Square, this museum is a fantastic, highly engaging indoor backup. It features massive rooms packed wall-to-wall with thousands of dinosaur bones, massive gems, and stuffed exotic animals from around the world. It’s small enough not to cause museum fatigue but fully air-conditioned and excellent for keeping curious kids walking and occupied.

Address: 26 Oxford St, Cambridge, MA 02138

Google Maps: Click here for directions

Cost: Paid $$