A massive natural rock arch gives the Tuscan mountain its own window to the sky.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

The ornate miniature mansions were built for Istanbul's feathered residents.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

Discovered by a soldier during the Revolutionary War, these springs helped create an iconic South Carolina ginger ale.

This former insane asylum now holds a pathological anatomy museum.

World's largest cave was only discovered in 1991, and now offers tours to the public.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

A majestic mansion designed in Mughalai style, complete with a turquoise onion dome.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.