A fairytale island floats in the middle of Italy's little-known Lake Orta.

Bali's remote "gateway to heaven" is one of the most sacred places on the island.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

The Andean town where every single building is decorated with a brightly colored frieze.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

Rainwater transformed this old quarry into a peaceful pond you won't find in most tourist books.

Legend says lovers who hold hands while venturing along this stone jetty and kiss at the end will remain together forever.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

Four-story slides send people whizzing through the math department at this Munich university.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

Now nearly dry, this lake is said to be the ancient home of the Lady of the Lake, and was once thought to be bottomless.

A open air theatre built on a cliff by an eccentric British woman.

The largest greenhouse in the world is home to over one million types of plants.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

This picturesque medieval monastery guards a small trove of historic treasures.

The world's oldest grape-producing vine has survived four centuries of turmoil and even has its own anthem.

The 43-mile route crosses through six islands with gorgeous views of the Seto Inland Sea.

A priceless work of art created by the saint's own blood sister hangs in a San Antonio basilica.

A daily replay of the experiment that proved the rotation of the Earth.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

A remnant of Korea's colonial past lies forgotten in a hip neighborhood in Seoul.

The mile-long pier stretches from a ruined fortress out into the Baltic.