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

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

Turkish adventurer antiques in the heart of the Grand Bazaar.

A tiny park in the middle of some big power politics.

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

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

A fountain standing as a testament to a doomed alliance.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

An ancient Roman relief beautifully preserved on the façade of a house.

This small chapel built into rock is the oldest place of worship in Luxembourg.

A hidden wonder displaying insects large and small.

A tower devoted to — and modeled after — the Divine Comedy.

A bright little alley in La Boca is a part of tango history.

This beautiful fountain was sculpted by a female artist who was ahead of her time.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Every Sunday, Bogotá turns 75 miles of its city streets into a bicycle superhighway.

Colombia's biggest botanical garden contains plants from all across the country.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

The capitol city's oldest existing cemetery.

I Street Bridge is the heaviest swinging center bridge in the United States.

Art Deco stylings conceal the true nature of this bridge.

This 19th century train workshop is a treasure trove of railroad history.

The California capital city once stood 10 feet lower than it does today.