Sistine Chapel

Honestly, with some of the most prominent works by some of the most famous Renaissance artists--like Michelangelo, Sandro Botticelli, and Pietro Perugino--how could you not want to take a quick look at the Sistine Chapel? I mean, it's in Vatican City, which is pretty worth checking out on its own.
Via: pamilne


Great Wall of China

Construction of the Great Wall began in the 7th century BC and continued for hundreds of years. It's the longest fortification ever built, constructed to thwart invasions of Mongolian and Manchu enemies. At its height (well, length), it was more than 3700 miles (6000km) long.
The Taj Mahal is considered "the jewel of Muslim art in India and one of the universally admired masterpieces of the world's heritage," which should be reason enough to visit its vaulted walls and beautiful gardens; but what's more, it was built from 1632-1653 by the Mughal emperor Shah Jahan in memory of his third wife, Mumtaz Mahal. Now that is some serious devotion.
Via: en.wikipedia.org

The Amazon

Regardless of which country you go to to see it--Brazil, Peru, Colombia, Venezuela, Ecuador, Bolivia, Guyana, Suriname, or French Guiana--considering it's the largest rainforest in the world and houses millions of unique creatures rarely found anywhere else, it's worth seeing for thousands of reasons.

Plitvice

Plitvice is the oldest national park in Southeast Europe, and the largest in Croatia. Its views are something that few would expect in Europe at all, and the fact that it remains relatively untouched (aside from a few walkways), makes it all the better.
Via: ffimo.deviantart.com

Antelope Canyon

You might think the Grand Canyon is the only canyon you need to see in the US, but really, consider Antelope Canyon, which is conveniently also located in Arizona. Antelope Canyon was created through rivers and streams eroding the sandstone, and it makes for a wholly awesome experience where you can just saunter through miles of them.
Via: commons.wikimedia.org

Stonehenge


Considering all the theories surrounding Stonehenge, it seems pretty likely that it'll have to do with the apocalypse anyway, so you might as well see the harbinger in person before it all goes to hell.
Via: wallpaper4me.com