Groups of prehistoric tombs that dot the mountains of northern Oman.

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

An imposing Omani fortress surrounded by date palm trees.

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

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

This mysterious abandoned fort looks like something pulled right from Arabian legend.

This massive piece of artwork weighs more than 250 tons, and was designed as a tribute to the first president of the United Arab Emirates.

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

No building in the world leans as far as the so-called “Leaning Tower of Abu Dhabi.”

This futuristic building is yet another architectural wonder in Dubai.

The world’s largest LED display, built over an F1 race circuit.

The cluster of igloo-like domes forms the remains of an ancient burial ground.

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

This enormous sports car themed amusement park is home to the world’s fastest roller coaster.

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

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

Whitewashed mosque contains the world's largest carpet.

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

This seemingly random 30-foot statue of an oryx in Qatar's capital was a mascot for the 2006 Asian Games.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

This vibrant side road in Doha was painted light blue to reduce heat.

Fourteen sculptures showing the development of a fetus stand outside a hospital for women and children.

The enormous diamond-shaped building packs a trove of academic and literary treasures into one futuristic space.

This unique museum doesn't shy away from highlighting Qatar's role in the history of slavery.