The oldest skyscraper of Europe now stands dwarfed by the surrounding structures.

The location of the world's first telescope demonstration.

The mirrored section takes the shape of Hebrew characters when viewed from above.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

This miniature take on the Kremlin is one Dutch man's retirement project.

The former headquarters of history's oldest megacorporation.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

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

The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

These giant yellow bowling pins seem to be defying gravity.

A bike traffic circle showcasing the works of local graffiti artists.

A first-of-its-kind circular bridge for cyclists.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

An intricate and amazing house built by architect Karl Junker.

Natives of this mud-brick desert village use an ancient irrigation system to grow sweet, seedless grapes.

The powerful party began with a secret meeting in this shikumen in 1921.

A collection of cafes and shops all crafted from recycled storage containers.

Two nearly identical Chinese pagodas stand side by side, along with ancient stone relics.

One of the word's deepest gorges is also tied to a fantastic legend.

Although resembling a grand Buddhist temple, this structure is actually the largest mosque in China.