I took these shots in December of the Rideau River, in two locations. The first one was from the commuter train passing over the bridge on its way south from Carleton University. The buildings you see are part of the campus. The river here is wild and swift, with rapids, reflecting the fast current downstream from Hog's Back Falls. Still, a good part of it here will ice over.
Further downstream, at Billings Bridge, the ice is more established, aside from close to the bridge, which doesn't ice over in the winter. The university can still be seen in the distance; that building just peeking out is the highest building on campus. Downstream from here the river winds its way through the city, following a parallel path to the Rideau Canal, bound for the Ottawa River.