Mutter Museum

Nestled in Pennsylvania, the College of Physicians of Philadelphia is where you’ll find the Mütter Museum—a place that's equal parts eerie and fascinating. If you’re into the weird and wonderful, this is a must-visit. The museum is packed with curiosities like lifelike wax models of human diseases, an incredibly detailed mold of the famous conjoined twins Cheng and Eng, and even a wall of skulls from around the world, showing off the wild variety in human cranial shapes.