Nihon Minkaen Folk House Museum
日本民家園 is a great way to spend an hour or two! Very pleasant afternoon walking through old houses! Not crowded at all... less than 30 minutes to walk here from JR Nanbu Line's Noborito Station 登戸駅 - there are maps at the station and near the entrance so it's pretty easy to find. If you like this type of open-air museums, check out Edo-Tokyo Open Air Architectural Museum 江戸東京たてもの園 in Tokyo.