Not knowing anything about this park other than that it’s reported to be quite beautiful, we took the opportunity one sunny spring afternoon to check it out. We were totally surprised by what we found: not by the scenery which was stunning, but by the park’s history. Did you know that Alum Rock Park used to be one of the most famous health spas in America? We didn’t. Between 1890 and 1932 it was operated commercially as a spa retreat and thousands of visitors rode the Alum Rock Steam Railroad to reach its mineral baths, indoor swimming pool, tea rooms, restaurants, and dance pavilion. It actually became so popular after the Second World War that the commercial enterprise started to damage the preserve and the health spa had to be shut down. What’s left now is a beautiful natural preserve with paths that wind in and out of abandoned mineral baths. It has a strange sort of Romanesque beauty and is most interesting to poke around.
Appian Way, San Jose
Alum Rock Park is basically a canyon in the Diablo Range foothills. It’s long and narrow with trails winding through the canyon connecting various picnic areas, abandoned spas and interpretive centers, and more isolated trails on the steep hill sides above. While appealing to grown ups, the wild, narrow, steep trails on the gorge sides are not suitable for toddlers and we gave them a pass for now, preferring to explore the shady canyon floor.
Signs within the park are scarce and park maps are hard to come by on a busy day and not terribly helpful if you do find one (very small scale with few land marks indicated). One immediate word of warning–if you have small kids, ignore the suggestion you’ll find in many other park reviews to use the free parking outside the preserve. It’s a very long walk from that lot to the more interesting parts of Alum Rock. I recommend paying the $6 day use fee for more convenient access.
Toddler Trekking
Once in the park, I suggest continuing to the Visitor Center along the Penitencia Creek Road. This is off the road and a little hard to spot. Don’t stop at the first sign indicating the trail to the Visitor Center, it’s a long trail and you’re better off parking about a quarter of a mile up the road in the lot that’s actually by the center itself. The area around the Visitor Center itself is fun to explore: there are two nice playgrounds for preschoolers, one with giant animal shapes to climb. We then suggest walking left (as you face the center) and checking out the Youth Science Institute (entrance fee $1 adults and 50 cents for kids). This has a small but fun display about local flora and fauna. There are live snakes and spiders, a stuffed fox for stroking, and stuffed bobcats and mountain lions to show the kids. The YSI also inherited a strange, but intriguing, Victorian Collection of stuffed birds and it’s nice to be able to show children all the hawks and owls that they might see while hiking locally. I also liked their little curiosity table with bones and nests and preserved frogs that children are encouraged to explore and touch. The YSI has an attached aviary which houses injured “local” birds which the rangers sometimes bring out to show visitors. When we were there we were lucky enough to see a Western Screech Owl outside the building with its ranger minder. The kids, especially The Puppy Dog, thought this was pretty neat.
Owl, owl, owl!
To see the slightly surreal ruins of the health spa, continue along the path in the same direction. It’s a fairly short trail, only a few hundred yards, and is perfect for little children to walk–just watch them near the creek edge. Both out boys really enjoyed seeing the springs emerging from the rocks, touching the mineral deposits and climbing into the (now empty) old stone spas. There are two or three bridges, depending how far you walk, and you can cross backwards and forwards across the creek to see the ruins on each side. Midway round the ‘Mineral Springs Loop’ (as the extremely unhelpful park map calls it) you’ll come to the Sycamore Grove which is perfect for snack time.
Taking the waters
The Outdoors Parent 
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