The falkirk wheel boat lift in Scotland.
this one is hand modeled, it's just under 50K polygons so should have little impact on performance
I modeled it in Lightwave. there's a POI marker on it so it should be easy to find
the boat lift is the only one of it's kind in the world and it connects the union canal with the forth and clyde canal near the town of Falkirk which is around halfway between Glasgow and Edinburgh