A war relic that has sat undisturbed since it crash-landed near Arno Atoll.

The birthplace of both the Atomic Age and Godzilla, and the namesake of the bathing suit.

An enormous concrete structure built over a nuclear crater.

The "Mother Temple of the Pacific Islands" stands at the center of 20 acres of lush, tropical prayer gardens.

A museum now occupies the mansion in Samoa where the prolific Scottish writer chose to spend the last years of his life.

The world is full of swimming holes, but few compare to Samoa’s idyllic To Sua ocean trench.

Museum dedicated to "the man who moved the Earth."

This man-made mound monument was built out of soil from all across the Polish empire.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

This little medieval church hidden in the center of Yerevan was lost and rediscovered—twice.

The ruins of a medieval monastery built on a perilous slope.

After visiting hours, this picturesque waterfall is essentially turned "off" to be used for hydroelectric power.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

A once-fairy tale mansion now stands in a state of disrepair.

This region of Slovakia boasts some of the most plentiful opal mines in the world.

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

This one-time health resort was used by aristocrats around the world.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

Through the colossal entrance to this cave you'll find limestone tubs and an underground waterfall.