A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

The private clubhouse for the members of the Academy of Magical Arts.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

She asked for a potato cellar and over the next 23 years he gave her a network of holy caves.

A monumental underground karstic wonderland is also the water source for over a million citizens of Beirut.

A unique configuration of blown glass can be found inside this hotel lobby.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

This futuristic building is yet another architectural wonder in Dubai.

This artificial archipelago was supposed to resemble a map of the world.

This indoor ski resort has a mountain contained inside a mall.

A faithful reproduction of Al-Jazari's enormous water clock.

Billed as the "largest natural flower garden in the world" this Middle Eastern show field has little competition at 45 million flowers.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Hans Christian Andersen for the postmodern world.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

Copenhagen's celebrated theme park and gardens.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.