A miniature city, once ruled by the Queen of the Netherlands.

At the base of this tower, a plaque marks the original center point of the Netherlands.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

A village on the east coast of England that has almost completely eroded into the North Sea.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

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

The last Viking king of Denmark is buried inside the crypt of this cathedral.

A natural wonder in south Denmark.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Charnel house at the foot of Mount Sinai.

A grassy pyramid named after a French battle.

For years, the remains of this ancient Roman fortress were hidden under an orchard.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Atop this former dutch railway office sits an interstellar work of art.

'The Letters of Utrecht' lays out a ribbon of poetry one letter at a time, with no final verse in sight.

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

The Great Fire of London and the regulation of one-way streets both started in this alley.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

Giant, friendly pelicans in Central London, the most unlikely of places.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.