Tidy

Detroit's Delray Tower has the cleanest, tidiest interior I've ever seen in an interlocking tower. It is also one of the last, if not the last, "armstrong" lever-operated towers in the country, although for at least a few decades, the levers have controlled switches and signals via electric relays rather than piping. With the recent closure of Kalamazoo's BO Tower, and ignoring bridgetenders' towers, Delray is the last manned interlocking tower in the state of Michigan.

Done