Here is a Google Earth image, slightly tilted from the north.
http://tinyurl.com/lsdfwkClick for zoom. I didn't have time to remove the text.
Let's see if I can get this right. St. Regis is angled on it's north side
like Portage ave. is.
Partly white roof on portage to rt. of Radisson is one bldg. north of St. Regis.
The dome is one street to the right.
Right across Portage, from the dome, is the Paris? building with the pink roof where the boys went their first day.
I apologize Bev.