Study the Alien etchings in this fountain while you refill your water bottle.

This work of engineering is imbued with elegance and ingeniousness.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

Equipped with thousands of LED lights, this geodesic dome-shaped stadium is an engineering delight.

A striking bronze sculpture of a Roman goddess with two hound dogs for company.

Somewhat controversial when first unveiled, this gathering of sea creatures has become a hidden gem.

This Melbourne bank has unique Gothic-style architectural features and is one of the most majestic operating bank branches in the world.

A unique underground car park that has become a popular filming location.

This 19th-century convent is now a flourishing 21st-century hub for art.

A colorful street named for the legendary Australian rock band.

One of the oldest theaters in Australia, it's also said to be haunted by a performer who died on stage.

A friendly monster lurks outside the State Library Victoria.

The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

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

Drink wine handed out through a window as part of an age-old tradition.

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

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.