A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This memorial to a murdered empress took 20 years to design, then spent 30 years hidden away in storage.

Pay your respects to a country that only existed for a few weeks.

The site is dedicated to an investigative journalist whose murder triggered a political uproar that changed Slovakia forever.

Brass plaques embedded in pavement preserve the memories of those who lost their lives at the hands of Nazis during World War II.

This 16th-century pole was once used in brutal public executions.

Yup, that's a 330-foot yacht passing over the highway.

A large measuring stick marks the lowest point of a country that is partially under sea level.

The location of the world's first telescope demonstration.

17th century palace once a meeting place for politicians.

Historic beer hall in Bucharest with magnificent stained glass and a lively folk band.

Living towers made of people that are now recognized by UNESCO.

Replica of Seville, Spains famous Giralda, a former minaret converted into a bell tower.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

Super Robot anime statue guards a forgotten suburban development in Tarragona.

A gem of Catalan modernism amidst the vineyards.

This work of art was conceived as a mosaic originally designed to decorate a car dealership.

Long tunnels run under the ancient chariot racing circuit to the tower.

This Roman arena once played host to bloody gladiatorial battles.

Touching the iron railings of Tarragona's balcony to the Mediterranean is said to bring good luck.

A modernist church in an ancient village.

An isolated village literally built into the crevices and rock formations of a mountain.