Crazy homemade flying machines will be taking to the skies over (and presumably the waters of) the Charles River this weekend.

You've probably seen Red Bull Flugtag commercials before and now you can see the event live at the Hatch Memorial Shell in Boston.

The event is free and open to all ages and will take place on Saturday August, 20th. The homemade flyers start soaring around 11 a.m.

With MIT and Harvard in town, I'm sure there are plenty of smarties that will put together some impressive flugtags.

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