It turns out everyone has been waiting in this line because they assumed that their event was so popular that they'd have to wait in line for it. We started talking and everything thinks they're going to a different event. I walked to the front of the line to find out the actual truth.
The line winded around the block, then a few more blocks, then down the boulevard and around some more blocks. Ater a lone, long walk, I discovered I was back in the same place.
This line isn't for anything, and it still keeps growing!