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

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

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

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

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

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

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

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

A somber memorial honors the hundreds of thousands of lives lost at this labor and extermination camp.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

This bell stars in a tragic love tale and is said to make wishes come true.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

One of the world's largest collections of medieval religious art.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

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

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

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

A public urinal so pretty, it was declared a national monument.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

One of Amsterdam's narrowest houses is located right across the canal from its widest.