Places bertshetler Wants to Go

This Croatian island is for sale but no one is buying due to the dozens of accused Nazi sympathizers who were massacred there after WWII.

Longest fortress system anywhere in Europe.

When Croatia became independent of Yugoslavia, the splintering governments left behind these concrete tunnels.

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

An ethereal glowing blue ocean cave in Croatia.

During World War II, this rice mill became a Nazi concentration camp.

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

A miniature train-ride through Slovenia's largest cave system.

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

Croatia's "hairy stone" fortress is one of the most well preserved Istrian castles.

Island wonderland for communist autocrats.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

A musical instrument played by the sea.

This gnarled old tree supposedly sprouted from seeds kept in the pocket of a 16th-century Spanish sailor.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

An exotic reptile facility showcasing some of the rarest, most venomous snakes in the world.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

One of England's oldest ongoing games is basically a town-wide scrummage that aims to push a leather tube into a local pub.

Several land speed world records were shattered at this Welsh beach.

This beautiful example of Victorian engineering is the oldest water-balanced funicular anywhere in the world.

This 19th century train workshop is a treasure trove of railroad history.

A giant concrete Brutalist water tower in suburban Johannesburg.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.