This human-made pond is part of a Korean palace complex first built in the 7th century.

A room filled with frescos that make it seem like the walls are crumbling down while giants die in despair.

On an island south of Iceland, a large volcanic rock formation resembles an elephant.

According to legend, those who pray at this statue will also be granted a wish.

The largest civilian satellite control center in the world is located in the middle of a drained lake.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

This wonderful rock formation constitutes the first geopark in Uruguay.

Of the many Jesuit missions in South America, this complex is one of the best preserved.

The burial ground of two kings and a queen is now a calm city park in the middle of bustling Seoul.

These ruins of a Phoenician sanctuary in Sicily have a dark history.

One of the best-preserved modern fortresses was part of a pivotal moment in the Italian Risorgimento.

The world's longest bridge fountain has hundreds of nozzles that create a beautiful, illuminated spectacle.

An old Dutch lightvessel is now stuck in a dock near the mouth of the Suriname River.

This small island off the coast of Uruguay hosts the largest colony of sea lions and fur seals in the southern hemisphere.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

Walrus skulls and narwhal bones were found here while excavating a 900-year old church.

This cemetery is dedicated to the people who died fighting for democracy in South Korea.

All that remains of an ancient royal palace is a water channel that was used for drinking games.

This sturdy, circular stronghold served as one of the forts that protected the Venetian Lagoon.

The grotto where Saint Ignatius of Loyola lived as a hermit for nearly a year.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

Inaccessible by foot, Japan's most secluded train station sits in the middle of nowhere.

Perhaps the most spectacular grotto along the Algarve coastline.

A burial vault located under Tiber Island in the middle of the Italian capital.