On Gab, Hans G. Schantz mentioned the Qianchun road interchange in China. Intrigued, I looked for video of the monstrous spaghetti junction, and found this. At first I thought it was CGI, but it's real enough - just speeded up here and there. Also, at about 29 sec. into the clip, watch for the idiot driver trying to do a 3-point turn and drive back up a one-way road, into the face of oncoming traffic. I don't think a CGI simulation would dare put in something that stupid!
The complex structure consists of 11 ramps going in eight different directions stacked on five layers. With its largest vertical drop of 55 meters, the interchange has been dubbed as a super "roller coaster" by many netizens.
Thanks to its high piers, plenty of room beneath the overpass is used for a recreational park. Many locals come to spend their leisure time.
There's more at the link, including a brief video clip of the interchange at night.
I don't like big cities at the best of times. If I had to navigate that thing, I think my inner heavy traffic anxieties would be working overtime. If traffic came to a standstill, I wonder what weight of vehicles would be supported by its piers?