The decaying remains of a once-luxurious Soviet spa town.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

This cuddly rodent has a place of honor at a Russian institute for genetic research.

This monument commemorates the soldiers who fought for 16 hours straight to penetrate this concrete fort.

This Russian locomotive museum was once devoted just to Lenin's funeral before expanding to encompass Moscow's entire train history.

Some Moscow residents once claimed the bizarre, contorted mass of metal on top of the building was used to manipulate minds.

Climb a set of vertiginous stone steps to the top of this impressive ancient edifice.

The ornate miniature mansions were built for Istanbul's feathered residents.

A marker honors the brief peace found by a tormented artist in the fictional land of Kcymaerxthaere.

This extensive collection covers thousands of years of Polish military history.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

A World War II torpedo launch station abandoned off the Polish coast.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

An abandoned Nazi explosives plant founded by the inventor of dynamite is now an underground museum.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

This Polish cave has housed a dragon, a brothel, and an enduring legend.