Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

1513 Turkish world map, full of European state secrets and snarky commentary.

A fountain standing as a testament to a doomed alliance.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A marvel of Byzantine engineering under the streets of Istanbul.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Where commuters walk through remnants of an ancient Greek necropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This legendary city has been a tourist attraction for centuries.

The hallucinogenic center of the ancient world.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

This cave holds a surprisingly colorful variety of geological oddities.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A theme park attraction designed to turn your children into LARPers.

Home to a protest movement, a bombing, and a dramatic change in labor history.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The palatial McDonald's that inspired Wesley Willis.

World's second largest particle accelerator, where nature reveals its secrets.