Ah, the Nut Tree in Vacaville. When I was a kid that was the Ultima Thule of foodie retreats. I may only have been there once but never forgot the little working miniature train that you could ride to the restaurant. Much later, a friend with a pilot's license and I flew in to their little airport and took their little train to their restaurant. I think the restaurant survived but the railroad didn't. Don't know about the airport.

While we're in California, I draw your attention to "It's-Its", the finest chocolate covered ice cream oatmeal cookie sandwich in existence. "It's-Its" can still be found, but their distributorship is almost extinct. I think you have to be in the right part of San Francisco to find them these days. Oddly enough, I found them by the case in the oil fields of Alaska (actually, the cafeterias there). My theory is that some ARCO executive got them on the commissary stock list. I made sure everyone on my crew got one (whether they wanted one or not). If you get the chance, try this delicacy while it's still there to be had. Ain't no other ice-cream cookie that comes close.