Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This bridge over the River Cuale leads to a neighborhood that was once an escape for Hollywood's elite.

These 2000 year old remains of a Roman aqueduct are hidden inside a hotel lobby.

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.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

The oldest garden in Prague, once part of an medieval orchard.

Walk through Czech history in Prague's largest graveyard.

This street has over a half-dozen names, all at once.

This unique Lady Liberty is one of the only examples of the figure sitting down.

340-foot statue built to honour the Heroes of the Soviet Union.

Copenhagen's celebrated theme park and gardens.

The only quarter of the Old City not dedicated to a major world religion.

A "miracle" that seems to produce more holy fistfights than holy revelations.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

Krakow's own version of the Hollywood Walk of Fame.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

This man-made mound monument was built out of soil from all across the Polish empire.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

A brick building in Kathmandu's Durbar Square is home to Nepal's most prominent living goddess.

Named after the Goddess of Harvests, Annapurna is the deadliest member of the Eight-thousanders club.

This historic square in Nepal is home to temples dating back to the third century.

This elegant neoclassical garden is a peaceful oasis in the middle of the Nepalese capital.