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

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

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

A marvel of Byzantine engineering under the streets of Istanbul.

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

A section of the long chain that blocked enemy ships from entering Constantinople.

An underground network of massive stone arches and their skylit vaults support ruins of portico structures above.

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.

The ruins of a fairytale castle with a tumultuous history stand high atop the mountains.

A monument to the art of slicing people open.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

An experimental, automotive replica of Stonehenge.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

Just a man taking his prehistoric pet for a stroll.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

A fitting attraction for the corn capital of the world.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

A sparkling sandstone cliffside that's worth a visit while it still exists.