Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

This geothermal hot spring hides beneath a slowly growing mineral dome.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

A house carved into a rock in the 1940s.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

This Transylvanian church has changed its denomination four times.

One of the most controversial statues in Romania is an emperor with no clothes.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

A medieval church built up to defend its village.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

This snug medieval lane is one of the narrowest streets in the world.

This bone-filled cave got its name after they found 140 bear skeletons inside.

The Natural History Museum that time forgot.

This Romanian village may have been drowned, but it is long from forgotten.

Even drowned in an ocean of toxic waste, the remnants of this Romanian village stand tall.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This massive underground salt mine now holds a sci-fi theme park in its depths.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

The world’s highest ski resort was deserted after an 18,000-year-old glacier melted away.