Visit the Ha'amonga 'a Maui

Hundreds of standing stones (tazunu) scattered across the savanna near Bouar, raised by an unknown culture thousands of years ago.

Ruined stone city built on coral islets.

Ancient city of the Sun and Moon pyramids.

Mysterious fields of giant stone jars.

The guardian lion of the Giza plateau.

Clifftop Transylvanian castle marketed as Dracula’s — worth it either way.

Stand among the cloud-wrapped ruins of Machu Picchu, the 15th-century Inca citadel perched high above Peru's Sacred Valley

The "museum without walls": grassy royal burial mounds, the Cheomseongdae observatory and Silla-dynasty treasures across the town.