Climb inside an iron crystal magnified 165 billion times its normal size.

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

A fountain standing as a testament to a doomed alliance.

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

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.

An abandoned Byzantine fortress and notorious prison.

A little-known park with unusual, half-ruined structures and a mystical energy.

A two thousand year old brothel uncovered in Northern Greece.

One of the most photographed locations in the entire city.

An autonomous republic of Orthodox monks.

The cross-shaped memorial is filled with kitschy tributes to the late pop star.

An abandoned resort in North Macedonia is a relic from the Communist Party of Yugoslavia.

Space-age monument to an early 20th-century uprising.

Backwards hour and minute hands and a timing mechanism that fluctuates with the temperature led to this clock tower's local nickname.

This 15th-century Serbian Orthodox monastery also contained a school for illuminating manuscripts.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

Structure built from the skulls of vanquished foes.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Be(w)ar(e) the moat around this historic Czech castle.