This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

A moving memorial to the fallen and missing from WWI trenches.

Brussels' favorite peeing boy has a sister.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

A little sculpture with a large wardrobe.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

Meet the bronze beloved pet to a family of famous peeing statues.

Theme park featuring miniature replicas of European monuments.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Cozy basement bar sports an inventory of over 2,000 beers.

Climb inside an iron crystal magnified 165 billion times its normal size.

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

The final resting place of the great navigator, or maybe his brother.

Spain's largest bullring offers a unique glimpse at architecture and history.

A curious memento mori hangs in the magnificent Cathedral of Segovia.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

This influential Renaissance-era library was once the haunt of kings and monks.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.