Over 60 paintings by Indiana's most important historic artists are on permanent display at all times, as well as works by Indiana's most important historic and contemporary ceramic artists. The mansion is furnished in important large scale American antiques focusing on the period 1860 to 1890. A superior grade Wooton desk and massive Thomas Brooks pier mirror are just two of the outstanding pieces of furniture. A Swiss made cylindrical music box featuring drums, bells, castanets, organ and flute sections is one of the highlights of the museum. The Weller Pottery Company had five monumental vases at the St. Louis World's Fair, and the Haan Museum has the three largest, including the seven foot tall Weller vase that won a Gold Medal for the Arts at the Fair. A sculpture garden on the grounds features 25 works in bronze, ceramics, steel, stone and glass by Indiana sculptors. The sculptures are displayed in a rolling setting along a wheelchair accessible path with native Indiana plants accenting the trail. Within the Sculpture Garden is a Theater Garden and stage (under construction) used for outdoor performances. A somewhat rugged mile long nature trail featuring 30 native Indiana trees is also an important attraction at the museum. The Sculpture Garden and Nature Trail are open and free to the public every day during daylight hours. In the summer of 2011, the
Indiana State Museum hosted the "Indiana Realities" exhibition, a major show of Indiana paintings from the 1930s and 40s based solely on the works from Haans' collection. From September to November 2016, the museum hosted its first temporary exhibit “Jim Davis: An Indiana Legend”, dedicated to Hoosier native cartoonist
Jim Davis, the creator of
Garfield. In October 2014 the museum hosted the Indiana Ceramics Celebration, exhibiting about 500 pieces by Indiana ceramic artists, including
Laura Anne Fry, Marvin Bartel, Mark Goertzen, John Goodheart, Richard Tuck and Alan Patrick. In April through early July 2017, the museum exhibited "100 Cups: One Artist's Journey" by Julia Livingston. ==Outreach==