The Mexican painter Diego Rivera created this unusual museum to display his collection of pre-Hispanic artifacts.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

These otherworldly formations were shaped over millions of years by the forces of nature.

This fountain pays homage to Qatar's history of pearling, the primary industry before oil.

A state-of-the-art medical facility dedicated to treating beloved birds of prey.

Qatar's oldest market can trace its origins back more than a century.

The building is a gigantic piece of art inspired by the shape of a desert rose.

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

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

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.

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

The pile of books behind the dignified writer gave the statue a most undignified nickname.

According to legend, this ancient column contains healing properties.

Gladiators once walked this ancient, subterranean passage.

A sharp sculpture made of thousands of pieces of jagged glass.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A fountain standing as a testament to a doomed alliance.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

An ancient octagonal weather station named for the eight Greek gods of wind.

These caves secretly held national treasures during World War II.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.