Hosmasa, a Bauhaus styled building, built in 1934 above a well, served as a secrete training base for "Haganah" in the 40's. An interactive exhibition and tour allows visitors to participate and experience the spirit of the "Haganah", searching for "Sliks" (weapon hiding place) learn about the 'security road' and life in Holon before and during the war of independence. Visit includes entrance to the Hosmasa well, and tour of Hosmasa garden.