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

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

Large miniature theme park with 100-plus models.

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.

340-foot statue built to honour the Heroes of the Soviet Union.

The spectacular Roshen Fountain show lights up the night sky all summer long, until it "hibernates" under the ice waiting for spring to come.

When you've got to go, you've got to go.

The deepest metro station in the world.

This unassuming museum's slogan translates to “there is a limit of sadness, anxiety has no limits."

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

The largest catacomb system in the world.

Padlocks cover this rickety footbridge with love.