Japan Ukiyo-e Museum (Nihon Ukiyo-e Hakubutsukan) exhibits the largest private collection of woodblock prints of Sakai Family, in a modern edifice in Matsumoto.
The museum contains more than 100,000 pieces of Ukiyo-e, in paintings, screens, and old books. Sakai Yoshiaki, one of Matsumoto's richest merchants, started collecting these artworks during the Edo Period, about 300 years ago.
The collection also includes the masterpieces by Utamaro, Hiroshige, Hokusai, and Sharaku.
After seeing such artworks, you can spend the rest of the day to the nearby Matsumoto Castle as your side trip.
The museum can be accessed from a 10-minute taxi ride from Matsumoto Station, or 15-20 minute walk from Oniwa Station od Matsumoto Dentetsu Kamikochi Line (5 minutes from Matsumoto Station).
The museum is open from Tuesday to Sunday, from 10:00 AM to 5:00 PM. Entrance fee is 1,200 yen.