photo by Joel Epstein, via submission

Los Angeles transit advocate and writer Joel Epstein took this image on a recent trip abroad. See if you can guess the city — the answer is posted after the jump.

To submit a photo or photos of something transportation-related, post them to Metro’s Flickr group or email them to sourcemetro@gmail.com. The photos we’ve featured can be seen in these galleries on Flickr.

Istanbul, Turkey!