Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

This abandoned Slovenian military barracks has become a punky-political art squat.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A whimsical bridge adorned with decorative dragons.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Hear the quietest sound from across the dome.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

After sunset the heart of Zanzibar's historic Stone Town neighborhood transforms into a culinary playground.

In Zanzibar, a historic 19th-century palace is a reminder of the world's shortest war.

The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

An ancient Egyptian temple in the middle of Madrid, Spain.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Quito's historic, main square dates back to the 16th century.

Ecuador’s historic seat of government has been quietly looted in recent decades, and no one knows how or by whom.

The world's tallest aluminum statue is also the world's tallest image of a winged Virgin Mary.

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.