The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Easter in Westminster may be the only time and place to behold Edgar Allen Poe made entirely of Marshmallow Peeps.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Art deco landmark on the outskirts of Washington, D.C.

A celebrity from the late Cretaceous period.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

The development and impact of electronic media showcased in a picturesque farmhouse in Maryland.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

A Civil War Museum with some notable medical antiques.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

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

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The trials and tribulations of marking Poe's grave.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

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

Remnants of a storybook amusement park hidden behind a strip mall.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

This free, take-a-book shop seems like a trick but isn't.

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

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

This stately 19th century library pushed architectural boundaries at a time when the public library movement was just taking off.