Huge stairway leads to this massive gallery.

Pilgrimage site for star-crossed lovers.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

Perhaps the most spectacular grotto along the Algarve coastline.

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.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The 18th-century inspiration behind Harry Potter's Sorting Hat.

An icon of the Battle of Britain is frozen in flight in a grand Victorian museum.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

Inside this art museum resides one of Glasgow's most famous musical instruments.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

A monumental underground karstic wonderland is also the water source for over a million citizens of Beirut.

The largest hewn stone in history.

A sandstone block marks the alleged spot where the legendary writer was conceived.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

An ancient monastery, a locked room, and a mysterious book heist.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

A colossal sculptural lion built by the same man who designed the Statue of Liberty.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.