If you'd like some outdoor excitement, pay a visit to Mt. Tonotake. No walk around the block, this hike is great for a mid-vacation work out.
This Hadano steep landmass is a good place to begin your day of sightseeing. There's plenty to see and do in the vicinity, including Nishihirahata Park, Oyamaafuri Shrine, and Tanzawa-Oyama Quasi-National Park. Take your time at Mt. Tonotake before heading to these other fine attractions.