The collection's holdings include Buddhist sculpture, Nô masks, paintings, and woodblock prints.

Though small, the collection of Buddhist wooden sculpture from the Kamakura period (1185-1333) is exquisite. Among its highlights are two finely carved bodhisattva figures, Jizô and Kokûzô.

Thirty-four Nô masks donated by Balthasar and Nanni Reinhart are among the most significant found outside of Japan. All important types are represented: humans, ghosts, and demons. The majority date to the Edo period (1615-1868); some are even older.

The painting collection consists of a small number of Buddhist paintings with rich colors and gold from the Muromachi period (1333-1568) and a fine group of literati and Zen ink paintings of the 18th and early 19th centuries, many from the collections of Julius Mueller and Heinz Brasch. A large part of these paintings are ink sketches that unite poetry, calligraphy and painting. The first significant gift of woodblock prints was made by Willy Boller in 1957. Since the print collection contains representative works of most renowned artists, it enables a comprehensive overview over this favourite genre of Japanese art.