The steepest classic funicular in the world glides along a dizzying incline.

Home to the deepest rift anywhere on Earth.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

In this truly magical place, rent hasn't been raised since the year 1520.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

One of the world's largest pianos is displayed in the workshop of the man who built it as a teenager.

The television series' iconic giant foot was borrowed from this classical painting.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

This striking icon of the disputed Republic of Artsakh caused a stir at a Eurovision Song Contest.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Though technically an illegal structure, this eclectic DIY apartment complex is beloved by its residents.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

This Brazilian town built by Freemasons is full of colonial Masonic architecture and symbolic imagery.

The half-mile long structure is so impressive, it even shows up on satellite images.

The vertical-axis windmills of ancient Persia have been grinding flour for 1,000 years and counting.

One of the earliest bowling lanes in the U.S. doubled as a sewing school during a time when women had little job opportunity.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

This dramatic rail curve was once the target of a failed Nazi attack.

A small museum of antique transport that's a must-see for bicycle lovers.

This is the house that spite built.

Houses are tucked between, on, and underneath giant boulders.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.