This is a great trip with a brief stop in US territory at Goat Haunt. Magnificent views and photo opportunities on a day with good weather. Waterton Town site is also a very pleasant place and a lot less busy than some of the more well known Rocky Mountains parks in Canada.
www.pc.gc.ca/eng/pn-np/ab/waterton/index.aspx
Google map: bit.ly/13t0ZfM