A true Valhalla for cactus and succulent lovers.

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 70 species of monkeys roam free alongside their human visitors.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

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

A monument hidden in the woods built in 1938 as a getaway for a Dutch museum curator.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

A grassy pyramid named after a French battle.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

This unattributed sculpture in Amsterdam is hiding in plain sight.

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

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

Peek through a transparent pyramid and drink in the mountain made of books.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

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

Standing stones found on a construction site are re-erected.

Abbey built on the ruins of Roman catacombs.

A symbol of friendship between the mountainous regions of Switzerland and Bhutan.

A tower-like theater in the Swiss Alps built to withstand the high winds and avalanches of the mountain pass.

Medieval irrigation channels built into the sides of mountains provided Valais with water for hundreds of years.

At 929 pounds and 26 feet tall, this stainless steel fork can only be used by the likes of King Kong.

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

A Swiss board game museum housed inside a picture-perfect castle.