The first skyscraper to include a Ferris wheel built into the facade.

The world's largest piece of copyrighted artwork.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

The cave holds a spectacular array of stalactites and stalagmites, including one shaped like a giant human heart.

This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.

This spectacular mosque houses the second-largest chandelier in the world.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

This bazaar is one of the oldest in the Arabian world.

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

An entertainment center in a huge transparent tent.

A sober museum housed in the original administrative building of one of Stalin's largest gulags.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

In Kazakhstan, a colorful cathedral with many lives once survived the most powerful earthquake in the region.

Beatlemania is still going strong... at least in Kazakhstan.

This Soviet statue is based on a piece of propaganda that's been elevated to national myth.

A boulder carved into the shape of the cosmonaut's head.

This mysterious complex of abandoned yurts and fading murals was meant to be a center of science and spirituality in Kyrgyzstan.

According to myth, there's a bloody explanation for the beautiful bright red color of this rock formation set amidst alpine vegetation.

Built entirely of interlocking pieces, construction of this Chinese Muslim house of worship required zero nails.

Lonely minaret stump of a destroyed city.

Time capsule of a museum, in which the Soviet Union remains alive and kicking.

Lived-in building, bedecked with an astonishing array of mirror mosaics.

This futuristic building is yet another architectural wonder in Dubai.

The world's largest frame offers spectacular views of the city's past and present.