I adore roadside attractions. I have two key sources for finding them:

https://www.atlasobscura.com has a very high bar for inclusion. I fire it up anywhere I visit and see if there's something obscure and interesting to check out.

https://www.roadsideamerica.com has a very low bar - like a rock that someone painted pink and added googly eyes to and now it looks a bit like a pig. Any time I'm on a road trip I keep an eye on this (I use their inexpensive iPhone app) to see if there's anything worth a quick diversion.

For those of you like me who tried to highlight then right click on Marfa Lights and ran into their annoying right click hijack, here's the Wikipedia link...

https://en.wikipedia.org/wiki/Marfa_lights