There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

Lavish royal estate punctuated with heated greenhouses.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Christ's blood allegedly preserved in a Belgian town.

A monument in the Belarusian city of Polotsk claims to mark the exact midpoint of the European continent.

Dine amidst exotic plants at this former royal greenhouse.

Macabre museum devoted to historical Viennese murders.

Each year melting snow turns these Austrian hiking trails into scuba zones.

A unique opportunity to stay the night in retrofitted sections of sewer pipe.

The beautiful baroque library of the Hapsburg empire.

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.

Some of the smallest works of art in existence.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

A naturally beautiful, seemingly bottomless deep blue spring.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

Highly spherical boulders on the shores of New Zealand.

The Catlins region has a bounty of breathtaking waterfalls, the best is arguably Koropuku Falls—a majestic waterfall with an enchanting bush walk.

A glacier pocked with ice caves and surrounded by rainforests.

An immersive Māori village where you can learn history and heritage through dance, ceremony, song, architecture, and food.

A perfect turquoise lake colored with glacier dust.