POST Perugia Science and Technology Workshop The Officina della Scienza e della Tecnologia of Perugia—acronym POST—is located very close to the Arco Etrusco and Piazza Grimana, right where the Università per Stranieri di Perugia has its premises. POST represents the point of referral in Umbria for exploring the universe of scientific culture, arranged in pleasant and lively exhibit spaces where the public of every age can become familiar with scientific methods and objects. A group of experts in didactic sciences assures a constant support for visitors, and has the aims of facilitating and stimulating the understanding of scientific matters. Inaugurated in 2003, the center is organized in three main sections. The first section—Exhibit Zone—hosts 17 interactive installations. Here visitors can personally experiment with some natural phenomena—like sound, light, colors and many other phenomena connected with waves—and experience sound and optical illusions. Another section—Image Gallery—is dedicated to temporary exhibits about topical subjects to inform adults and minors of new frontiers of science through interactive exhibitions, informative texts and spectacular images. Finally in the didactic hall the themes illustrated in the other sections are proposed again so that the visitors can make a personal enquiry in an autonomous way with the aid of a working kit and tools at hand.