Beautiful carved tunnels.

A Belle Epoque bordello turned into a themed love hotel.

An Amazonian hotel is the ultimate treehouse and provides stilt based accommodation.

This classic restaurant features a gorgeous mirror-clad room.

Underwater restaurant at the coral reefs of Eilat.

A taste of the macabre Tokyo's ritzy shopping district.

Venue for strange sideshow displays and musical acts.

An underwater restaurant, surrounded by a coral reef.

Burlesque Hospital Themed Restaurant.

The only museum dedicated to the history of the "Magic Lantern," a medieval slide projector.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

One of the world's most complex timepieces.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

Inhospitable caverns just beneath this island paradise offer insights into alien worlds.

The second-deepest known cave on Earth, hidden in an extremely remote mountain region.

An enormous concrete structure built over a nuclear crater.

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Known as the most dangerous bridge in the world, the Hussaini Hanging Bridge is only one of many precarious rope bridges in Northern Pakistan.

A crumbling hospital from the 1850s on Roosevelt Island.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

The intriguing personal collection of a professional demon-chaser.

This lab's maddening silence is good for business but bad for sanity.