This 16th-century monastery was founded to cloister the daughters of wealthy local families.

An Inca spa, military outpost or maybe… both?

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

A pretty park of over 1,600 olive trees that grew from just three saplings brought over from Spain.

A fascinating little museum all about the rich history of Peru’s famous plant.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Huge stone depressions which may have acted as an Incan agricultural experiment.

Stone carvings record the Norse myth of Sigurd, providing a glimpse into Scandinavia's transition from paganism to Christianity.

Built in a perfect square, this archaeological site is one of the largest and best preserved ancient fortifications in India.

This beautifully deceptive waterfall is something far different from what it appears to be.

A swirling spectrum of stained glass dazzles visitors who enter this subway station.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

The tiny airport in remote Newfoundland that inspired a hit musical is also a modernist architectural gem.

This extraordinary geological oddity resembles human-made pavement.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

After millennia of erosion by sand and churning water this Brazilian valley now looks like a lunar fantasy.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

A 300-kilogram egg sculpture that embodied a neighborhood revival.