Great view on a clear day...
We went on an unusually clear day in late November and encountered a little bit on Thanksgiving weekend congestion but it was still worth it. The inside of the mansion is worth the cost to tour once, but not something for children unless they are genuinely interested in history. The view from the back is stunning, showing off Mt Hood, Mt St. Helens, and Mt Adams on clear days. I'm looking forward to going again this summer when the gardens will be in bloom.