This enigmatic Roman tower lurks just outside Belmonte.

These abandoned waterworks are crumbling into the Potomac River.

The largest and most famous wax anatomical collection anywhere in the world.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

This pun was simply waiting to come to life, and one defense contractor made it so.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Brussels' favorite peeing boy has a sister.

Cozy basement bar sports an inventory of over 2,000 beers.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

An open-air sewer system that was covered piece-by-piece over 300 years.

A swath of France so devastated by war it is still forbidden to go there.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

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

The United States Capitol's former columns still stand.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The vast, legendary catacombs hold secrets much stranger than stacked bones.