Ship skeletons haunt Baltimore's waterways.

A Maryland museum dedicated to Black history, housed in a historic church.

The "All-Seeing Eye of God" symbol on this library is a clue to one of the many former lives of this building.

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

A touching tribute to a local hero who made sure his neighborhood stayed clean.

This general store is more than a century old and home to various oddities and antiques.

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

An eerie, decaying ghost town destined to fade into the forest.

Electronic inventions that resulted in products and systems we use every day are on display in this labor-of-love museum.

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

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

Outsider art meets paleontology at this roadside reptile repository.

A Civil War Museum with some notable medical antiques.

This striking Victorian Home with its 113-foot turret is best known as the site where abolitionist John Brown was executed in 1859.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

A remote horde of architectural treasures fit for Indiana Jones.

A priceless collection of the Nation's cryptologic history.

The whole world in one water tank.

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

This suburban park recalls the history of a famous tavern. Despite the name, it's no ordinary place!

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

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

This abandoned Victorian-style house was built in 1884.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.