A marvel of Byzantine engineering under the streets of Istanbul.

Live a night as a Byzantine King, with a minibar and private jacuzzi.

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

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

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

A deadly ancient portal to the underworld.

A 30-acre garden inspired by the principles of modern physics.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

An amazing collection of fantastic reptiles, amphibians, spiders, and insects.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

One of the best absinthe distilleries in the United States.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

This floating cinema brings new meaning to the phrase "going out" to the movies.

Home to the "Circus" trees created by Axel Erlandson.

Hindu temple of the dead home to hundreds of long-tailed macaques.

Sacred waters rescued from the wrath of a volcano.

A Buddhist theme park brings you a Buddhist version of Hell.

"Would you like your sangria in an IV bag, or straight-up?"