Places squeakiepig Wants to Go

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

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

This former estate of a fascist leader is now a burnt out ruin leading to a system of secret tunnels.

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

Legend has it fairies gathered at the site of this medieval castle.

Longest fortress system anywhere in Europe.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

Gargoyle head that brings good luck.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.

Humble beginnings for one of the world's most famous scientists.

This huge metal monument is slowly being stripped to its concrete skeleton.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

The remains of a sunken military ship wreck visible through clear water.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

An ethereal glowing blue ocean cave in Croatia.

This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

A marvel of technology a century ago, this disused power station now offers a lovely glimpse into the industrial design of the past.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

"Medieval" castle built in the mid-20th century by one family.

A Hungarian optometrist's charming collection of Asian art and curiosities.

Hundreds of boat-shaped headstones fill this graveyard as part of a centuries-old custom with mysterious origins.

The massive white mound and accompanying water terraces are a striking geological oddity.