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

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

An interactive exhibition space dedicated to the kinetic sculptures of Swiss artist Jean Tinguely.

The bears of Bern have been a city highlight for over 500 years.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A fountain standing as a testament to a doomed alliance.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

The Swiss artist's bulbous and overgrown shape-shifting sculpture controversially graces the center of Bern.

Stalactites and stalagmites in a beautifully lit cave.

This no man's land slicing through the island is strewn with abandoned relics of another time.

Colorful and chaotic stacked hotel in North Holland.

A beautifully eclectic mix of architectural styles.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

The once highest point in China blends symbolic design with a kick of adrenaline.

This statue pays tribute to the iconic musician in the place where he recorded his final studio album.

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

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

The attic of a four-century-old canal house hides a clandestine church.

A UFO-shaped event building originally intended to be a science museum showcasing the future.