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

A unique seaside cave where Aleister Crowley faked his own death.

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

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

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

The stunning interior of this Gothic church is covered in ornate gold details.

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

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

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Lumps of significant stone from around the world surround a flaming monument for peace.

The location of the world's first telescope demonstration.

A bridge that has seen many reiterations over its lifetime.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

This massive monument was unveiled the day Kosovo declared independence from Serbia.