A phallic shrine to a princess goddess in Krabi, Thailand.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.

Stained-glass windows inspired by Vincent van Gogh's paintings decorate this church in the town where the artist's career began.

This subterranean studio is filled with fascinating kinetic art.

This unattributed sculpture in Amsterdam is hiding in plain sight.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

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

The world's only museum devoted to the wonders of fluorescence.

A unique collection of gilded age mechanical pianos.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The greatest amusement park in the world is wall-to-wall farting dogs, puking rats, and cows with exposed breasts for the whole family.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

This wooden hotel is a temple to German sustainability and forest conservation.

Repurposed space and ultra-modern construction collide to create this geometric wooden spectacle.

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

Colorful and chaotic stacked hotel in North Holland.