Paragliding might be fun.

But, paragliding between two tall buildings just seems like a terrible idea.  But, that did not stop the guy in this video.

In the beginning of the clip, found on Reddit, it looks like our hero may not make it far at all.  But, he gets to those buildings.  Watch what happens in the video.

Sploid notes that people should probably stop building gaps between two buildings.  Because, this sort of thing happens a lot.  See the wingsuit guy below.