An ancient Egyptian temple in the middle of Madrid, Spain.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Commonly acknowledged as the only public monument to the Devil himself.

A lush indoor jungle fills this bustling Madrid transportation hub.

Many miles south of Loch Ness, a similarly-named sea monster stands at the center of a roundabout.

Whether they are bulls or pigs, these ancient animal sculptures are fascinating relics.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

A tiny church on a man-made island in the Adriatic.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

You can soak in three relaxing pools filled daily by the tide.

The largest salt farm in the Canary Islands is located at the foot of an active volcano.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

This local emblem is the oldest and largest dragon tree in the Canary Islands.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Hundreds of caves once used to store grains and animal feed.

Nature puts on a spectacular show at this blowhole on the eastern side of Gran Canaria.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

These small, triangular, colorful houses are a staple of Madeira Island.