Villagers have recycled bomber fuel tanks from the Vietnam War and turned them into very, very strong boats.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

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

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

A futuristic, brutalist masterpiece that is also strangely prison-like.

This World War I fortress is the perfect place to catch a Montenegrin sunset.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.

Because sometimes the most efficient route from A to B isn't a straight line.

An underexplored, 130-foot tropical waterfall that you will have all to yourself.

These spectacular ruins were built by Spanish padres in the 17th century.

A geometric jumble of homes.

An iconic view point of the Sea of Galilee offers a look into Israel's past.

A 1,500-year-old ghost settlement is slowly fading away.

This dizzying span over the ancient Algerian city was once the highest suspension bridge in the world.

Where a Japanese government official issued transit visas to Jews fleeing from Nazi-occupied Poland.

Ever-growing collection of devils in art.

A curious art park at the geographic center of Europe is home to 3,000 television sets and other wonders.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Lithuania's outdoor sculpture trail of wooden folk art.

Mysterious craters may have been home to an ancient cult.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

This symbol of the French Revolution still stands where it was first planted during the 18th-century.