On Bicycles, and.... what else is there?

I started with the Nooner yesterday, then split off @ Golden Oak to do 30 second sprints. First I did four on various hills around there, then I headed up Alpine, planning on doing more on the climb towards the gate where I'd turn around. A small deviation on Alpine Trail led to some hiking around the numerous railroad ties, but soon I was back on Alpine, riding past Willowbrook. As I gently climbed I was intrigued by the open house sign at the entrance to a private road. Cool: a chance to check out what's hidden behind the tree cover. But the road, which I'd assumed was a short access route to a few oversized domiciles, instead went on and on and on. I climbed slowly, except every 6 minutes or so doing another 30 second sprint. On my third sprint, I finally reached the " open house ". I didn't see much of a house, only a driveway, but instead of investigating that further, I continued down the road. Then I came across the colossal compound which is the...