A blooming house of worship for the masses.

A startling, centuries-old subterranean marvel hides in plain sight.

An extraordinary "City of Caves" carved from solid stone.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

The beautiful 16th-century stepwell lies in the shadow of a famous fortress.

Ornate, dome-topped cenotaphs fill this royal crematorium.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

The world's second-largest sundial, made entirely out of stone.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

This man-made mound monument was built out of soil from all across the Polish empire.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This emotive sculpture was originally created for the 1878 World's Fair.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The first green space constructed on an elevated viaduct.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

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