Rail Fan Park
Park Forest, Illinois
Pilgrimage spot for train buffs. One of America's two largest railroad intersections, a self-described "cloverleaf interchange for trains," completed in October 2011. Next to it is Rail Fan Park, featuring a 35-foot-high viewing mound where train-iacs can watch the average 30 trains that pass through each day. Long trains loop over themselves as they navigate the interchange, and a scanner on the platform allows visitors to listen in on the engineers.
The only other similar intersection is in the mountains of California, out of public view.