Perhaps the most spectacular grotto along the Algarve coastline.

A modern frieze of ancient Grecian mythological figures playing a national pastime.

The first "Hut" was actually a small brick building.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

This medieval "painted village" is famous for its geometric facades.

A domino effect created with Britain’s iconic telephone boxes.

This large, circular tomb is the final resting place of the first emperor of Rome.

This museum is a full-size replica of an original church constructed during the 13th-century.

This magnificent white pagoda was constructed to resemble a sacred Buddhist mountain.

Templar knights fleeing persecution are said to have left this sword in stone as a landmark in 1307.

A forgotten "city of water" underneath the famous Trevi district.

You can still find treasures on the pebbly beaches of one of the world's oldest jade-producing areas.

A tropical rainforest designed to resemble a scene from the monumental film.

This castle resides in a valley known for immense bloodshed during the Middle Ages.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

This neon installation is a tribute to a Mexica god, who gave his skin to humanity.

Hidden deep in a forest is this geological wonder carved by glaciers.

The wreck of a B-29 Superfortress now stands as a memorial left in the moors.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

Nope, not the one in France. The only officially-recognized reproduction of Monet’s garden in Giverny is located in a remote corner of Japan.

A swirling spectrum of stained glass dazzles visitors who enter this subway station.

One of the greatest collections of coins in the world is housed in the former mansion of an archeological pioneer.

This museum in the famously blue neighborhood of Sidi Bou Saïd showcases a traditional Tunisian lifestyle.

Deep in the Negev Desert, the world's tallest solar tower looks like a sight straight out of science fiction.