This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

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

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Eat the ultimate iteration of Portugal's most beloved pastry.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

A 13th-century convent where St. Margaret of Hungary spent her teenage years.

The metal leaves on this tree are engraved with the names of Holocaust victims.

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

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

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

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

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

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

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

When you're a great Russian Tsar, even your vomit gets a statue.

This non-profit theatre in the heart of Brussels is dedicated to hosting independent films.