If you're afraid of heights, keep scrolling: this site marks the highest climbing structure I've been to. Climb a 30-foot ladder to the top of an old grain mill to see the blaze of city lights all around, then climb down to investigate the eerie glow of old boating buildings and other, less impressive towers with plenty of low roofs to traverse and a low threat for other explorers. Make sure you stop by the abandoned parking lot before you leave to add to the graffiti wall.
Have you been to this site? What did you think? Leave any tips of your own or observations in the comments to help other explorers!