That is so awsome! I love shit like that. Like up in the UP (where you know nobody is around) old houses and old barns that have been abandoned for like 20 years I'll pull off the road and go check it out if I got nothing to do.
In Dollar Bay, up near Houghton, there is actually an old dredger sunk in the water. Back in like the 50's while they were digging out the bay it got to close to the water and the tracks sunk in. They figured it was cheaper to leave it and cut their losses then dig it out I guess. The boom and bucket are actually swung onto land so you can shimmy up on it and "tightrope" the boom for abot 100ft and go into the operators cab. Which is no joke about 2000sq/ft