Hill 88

Hill 88 is the former site of a radar installation in the Golden Gate National Recreation Area. It's a favorite walk for us (I've blogged this hike before), especially as Rudy can go for a swim at Rodeo Beach at the end.
Start at Fort Cronkhite and head up the coastal trail. Hill 88 is well signed. After visiting the top of the hill you can either walk back the way you came, or take Wolf Ridge Trail (spurs off to the left about half a mile before the top of Hill 88) to Miwok Trail to circle back round to Fort Cronkhite and Rodeo Beach.
When you see this, you're nearly there.
A couple of years ago the alien plant killing fascists pulped the few trees providing shade on the trail. It's unrelentingly hot in the summer now. They could have started with the wreckage at the top of Hill 88, or maybe European descended homo sapiens but no, it was the poor cypress trees that got it. 
The aforementioned wreckage at the top of Hill 88. 
Rob, Gill and Rudy at the top of Hill 88. Click the picture to get a better view of San Francisco in the background.
Daffodils blooming in January on Wolf Ridge Trail.
A curious raccoon. As I leaned down to take a photo it stood up to check out the camera.
(5.98 miles, 2 hours, 7 minutes, average 2.80 mph, view in Google Earth, view in Google Maps)