The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

At 207 feet, one of the world's longest continuous escalators.

The site of the climactic scene from the classic horror film is now a historic landmark.

Home to items never before seen by the public.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

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.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

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

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

A former major munitions plant that has been converted into a sprawling art space.

An original apothecary from 1792.

A massive underwater sinkhole made famous by Jacques Cousteau.

Send a postcard while vacationing with Satan.

Yo, Adrian!

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

2300-year-old Roman road connecting the empire.

Breathtaking and huge 430 year old maps of Italy.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."