The eerie remnants of an ancient forest were hidden under the sand for centuries.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

An inconspicuous footbridge beloved by San Diego locals.

This collection of historical artifacts and tropical wildlife waits just beneath the surface of the water.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

One of the most accessible undersea plane wrecks in the world.

In paradise, feral pigs have claimed an island all to themselves.

An important Mayan religious and trading center dating back to 200 BC.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

An early 20th-century bullring converted into a modern shopping center.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

London's smallest police station is barely the size of a phone booth.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

This bridge was constructed from the rubble of the infamous Bastille.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Carved fountains poignantly placed in parks and in front of special monuments.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.