Otsumago is small post town and entrance of Tsumago-juku. There are some of Traditional house that has Udatsu that are still used as hotels.
Otsumago (大妻籠) is small post town located between Tsumago-juku and Magome-juku. There are many traditional houses that shows the time of Edo period. Some of the house is over 300 years old. Traditional Hotels of post town are still serving the travelers.
Tourist Info.
There is parking and restroom.
Access
0. at Kiso-Fukushima Station.
1. use JR Chuo Line to Nagiso Station.
2. use local bus to Tsumagojuku.
3. walk.
20 min
New Wave Samurai Movie. 
映画好き集まれ！ 
Otsumago is small post town and entrance of Tsumago-juku. There are some of Traditional house that has Udatsu that are still used as hotels.