Hidden just under the waters around this Turkish island are the ruins of a once great city.

Roman ruins, natural methane fires and a lovely beach.

One of the most exquisite Lycian hilltop citadels in Turkey.

According to local legends, the shallow sandbar that allows visitors to walk across Orhaniye Bay has a tragic backstory.

These ruins once flourished as the capital of the Lydian kingdom, often credited with the invention of metal coinage.

Roman ruins top white travertine terraces formed by ancient hot springs.

The best-preserved ancient theater in the world.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Ottoman-era houses lovingly preserved.

Fantastic lake on the heart of a fault line.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

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

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

A sixth-century Byzantine cistern hidden below a modern carpet store.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

A surprising and unconventional mosque hidden in the subsoil of Istanbul.

This shuttered power plant is now Turkey's first industrial archaeology museum.

The most metal church of all time was built in record time because of an international, pious pissing contest.

The home-turned-museum of Barış Manço, the mustachioed Turkish Elvis for children.

One of the largest wooden constructions in Europe was meant to be a casino, but soon became an orphanage.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.