If you'd like some outdoor excitement, we recommend visiting Mt. Mito. No easy stroll around the block, this hike is fantastic for some mid-vacation exercise.
You'll soon discover why this Hinohara steep landmass is popular with travelers. If you're looking for more to do and see here, Lake Okutama, Kosugenoyu Thermal Baths, and Forest of Tokyo Citizen are in the area too. They won't take you very long to get to from Mt. Mito.