This hidden green space is the city's second largest conservatory.

A cluttered and astounding collection of antiquities and curiosities.

A little slice of Japan and its aesthetics in London's Holland Park.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

The largest greenhouse in the world is home to over one million types of plants.

This lovely ancestral home inspired the author D.H. Lawrence, and features a tunnel made out of a living willow.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

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

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

One of the last doorless, continuously moving elevators still in use in the U.K.