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

Breathtaking and huge 430 year old maps of Italy.

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.

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

Elaborate tile work in this railway station tells the story of Portugal.

A hidden three-foot-wide house separates these two regal churches.

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

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

Perhaps the most spectacular grotto along the Algarve coastline.

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

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

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The hallucinogenic center of the ancient world.

Rumored to have been frequented by Vincent van Gogh, it's the only remaining genever producer in the Hague.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

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

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

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

This statue in Plaza San Francisco commemorates a beloved figure from 1950s Havana.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

This bakery and museum offers tours of the tastes and mythology of Aachen's signature spice biscuit—just don't ask for the recipe.

The remains of a once-famous hotel that also acted as an artist colony.