Wish I was there right now...
With the end of the season the memories of many wonderful winter days spent where some of the Monarch's west of America's Continental Divide spend their winter.
During the winter month's way back in the early 70's when I was a partner of an insurance agency in Pacific Grove, CA (aka Butterfly Town, USA), I'd get overloaded by the insanity of the agency and need a break. Often I'd walk over to the Grove Market by my office, have them make me up something tasty in their deli for lunch, grab a drink and walk to the Monarch Sanctuary nearby.
On the below map my office was at the blue "O" and the sanctuary at the red "X", so it was a nice short walk through the old Victorian houses that lined Lighthouse Ave (most of them are really nice B&B's now) to Pacific Grove's butterfly trees. It was always amazing how quickly the peace and tranquility of "The Grove" would turn a hectic day into one to remember instead of dread.
The rest of the year I'd take my walks on the ocean path that runs all the way around Pacific Grove from Monterey to Pebble Beach. The ice plant was always colorful, the bay/ocean always beautiful and the crashing waves music to my ears. Carmel was a very fun place to live, and Pacific Grove a wonderful place to work back then. I miss the area and had hoped to visit it "one more time" in my life. Have lots of nice memories though.
Most will probably never get to go to the Mexican sanctuaries, but a trip to those along the central California coast would be well worth a looksee.