Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

The largest known open fault in the United States is basically a giant natural refrigerator.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

The longest sculpture trail in the United Kingdom.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

Architectureal fantasy quarter of Rome.

Architectural monsters are devouring this palace's every door and window.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A spiritual sanctuary in a natural cave.

An abandoned monastery sits on a far-off island in the Adriatic Sea.

Gold Rush-era tombstones line the park's paths.

An overlooked and unassuming engineering marvel.

A storybook European village in Berkeley.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Towering basalt columns, a creation of fire and ice.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An artsy hidden staircase leads to breathtaking views of San Francisco.

One of the most remote spots in America and the first protected wilderness area in Nevada, named after an old legend.

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

This tiny square mile of Canadian sand was once considered the world's smallest desert.

Home to a full cast of the largest woolly mammoth ever recovered in North America.