The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

An astounding collection of medical specimens, including bits of President Lincoln.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

Eighteen miniature death-scene dioramas.

An enormous overgrown greenhouse teeming with graffiti and wildlife.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

Hidden deep within New Jersey Pine Barrens is a massive graffiti wonderland.

Seven people are buried in the middle of what's now a movie theater parking lot.

One man's lifelong obsession with death.