This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

Three hundred illuminated pillars form an “artificial forest” in Medellín.

A lush indoor jungle fills this bustling Madrid transportation hub.

A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

This former royal palace with gorgeous gardens became the first museum in Morocco.

The singular ruins of a mysterious lost city.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

This massive chapel in the middle of the Indonesian forest is both haunting and fowl.

The tiny statues form China's only known terracotta army from the Han dynasty.

These enigmatic columns tower over the ruins of an ancient Toltec city.

Only 68 people per day are allowed to visit this New Zealand bird-watcher’s paradise.

Twelve hundred stone carvings guard this off-the-beaten-path Buddhist temple.

A mesmerizing sculpture marks the site where the activist was arrested after evading capture for 17 months.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

An extravagant monument to an extravagantly unpopular Emperor.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

A familiar otherworldly creature guards this 12th-century Scottish abbey.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Daily lunch spot for many of Washington, D.C.'s cab drivers.

An overlooked oasis of quiet on the grounds of Washington's monumental basilica.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.