Secret North Korean passage discovered below the world's most dangerous border.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

One of the best beaches in the entire world.

Australia's largest traditional hedge maze features a Great Gnome Hunt.

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

Australia's largest medical museum featuring a 19th-century pharmacy.

Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.

Fifteen Jodhpur queens left their handprints before going to their fiery death.

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

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

An ancient iron pillar in Delhi that seems to be rustproof.

Hear the quietest sound from across the dome.

A historic observatory precariously perched at the "Top of Europe."

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

An abandoned colonial French prison notorious for its hellish conditions.

360° views of the city plus five floors of optical illusions and hands-on science.

A six-ton wedding present for the King of the Scots.

The final resting place of soldiers' loyal canine companions.

Macabre astrological automaton clock dating to the late 1400s.