Places dieewigemaitresse Wants to Go

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

Rock carving created 1,300 years ago 75 feet off the ground.

UNESCO-protected ancient burial ground.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

An abandoned saucer-shaped monument in the Bulgarian mountains.

After witnessing the rise and fall of three empires, this ancient city was finally destroyed by a series of earthquakes.

This 3,800-year-old site contains markers used to study the movement of the sun and moon and create a lunar calendar.

Space-age monument to an early 20th-century uprising.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

This massive subterranean fissure is known as the "underground Grand Canyon."

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The only gulag ever to exist in socialist Yugoslavia.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Longest fortress system anywhere in Europe.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

This ironic war memorial thumbs its nose at a campaign of inedible humanitarian aid food products.

A gargantuan crystal kingdom.

A historic Puebla estate featuring a striking castle.

A sinuous path among steep cliffs creates a stunning sight in southwestern Serbia.

This former insane asylum now holds a pathological anatomy museum.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.