The first paper airplanes are thought to have been created in China or Japan many moons ago.
It's neat to think that something so basic — folding a sheet of paper and launching it — has remained a popular activity well into the digital age of the 21st century. Maybe its continued popularity is due to the vicarious thrill you get, seeing a little paper plane you created soaring through the air.
Here are some of the most popular paper planes on Instructables. Some of them fly pretty well, others are just impressive to look at (but are better left in their paper hangars).
BONUS: Scroll to the end for a paper plane launcher!