I will finally long find 100 in the next few days and I was hoping for some suggestions on a memorable cache.

My idea of a great #100 would be:
1. Within a 1 hour drive of Portland.
2. A multi-cache.
3. Challenging terrain with a hike of at least a mile.
4. Memorable cache location. (great view, location or clever hide)

Maybe that is too much to ask, but all suggestions are welcome.