The first Catholic church in Singapore is a Neo-Gothic colossus with a rich architectural history.

The busy transport hub is home to the tallest airport slide in the world.

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

Ferdinand Magellan dubbed the world's largest water village the "Venice of the East."

A symbol of Islam in oil-rich Brunei.

This restored eighth-century palace is a shining example of ancient Umayyad architecture.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

Bohol's unusually shaped hills turn brown in the summer months.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.

A powerful cyclone once made one of the world's largest sinkholes completely fill with water.

The place where World War I began.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

A little sculpture with a large wardrobe.

Climb inside an iron crystal magnified 165 billion times its normal size.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.