Go inside to really appreciate this 500-year-old technological masterpiece.

This sea stack in Cyprus is traditionally seen as the birthplace of the goddess Aphrodite.

An ancient necropolis of magnificent tombs.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

A charming beach town in Turkey captures all the colors of the rainbow.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

The ancient latrines of the Greeks, in all their public glory.

Opened in 1976, this monster-sized version of the fast-food franchise is sometimes called the Epic McD.

Slum Settlement Filled With Mountains of Garbage.

One of the holiest places in the region, devotees come to Tirta Empul to bathe in the holy spring water.

Hindu temple of the dead home to hundreds of long-tailed macaques.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

Watch butterflies take flight before you fly.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

Singapore's landscaping project is home to 18 incredible Supertrees.

A whimsical shrine with a porcelain Torii gate, split in half by an active train line.

This ornate example of 19th-century Chinese architecture is one of only a handful of Confucius shrines in Japan.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

The world's largest reflecting pool is just two centimeters deep.

A young Gustave Eiffel assisted in the construction of this skinny metal observation tower.