These roaring primates were considered a divine creature in the cosmology of the Maya.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Singapore's oldest Hindu temple.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

A historical convent known for taking in bad luck babies left on its doorstep is now an upscale shopping center.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Singapore's landscaping project is home to 18 incredible Supertrees.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Walk through Czech history in Prague's largest graveyard.

Macabre astrological automaton clock dating to the late 1400s.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

A blooming house of worship for the masses.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.