Palazzo Paccaroni is located in Fermo along Corso Cavour, in the Contrada di San Bartolomeo, the building is undoubtedly one of the most valuable buildings in the entire architectural heritage of the city of Fermo. Currently, the palace, which in the past hosted the Conservatory of Music G.Rossini, is occupied by various activities, following numerous renovation works. The building is characterized by a symmetrical facade, embellished by the central score in travertine rustication, with sculpted accents related to the portal and the windows above, while inside we can visit 2 scientific museums:

- The Polar Museum "Silvio Zavatti," the only museum in Italy dedicated to the environments, peoples, and Italian Arctic polar research. It was founded in 1969 in Civitanova Marche by Zavatti, who had already founded the Polar Geographic Institute in Forlì in 1944, of which it is an integral part. In 1985, the Museum was donated to the Municipality of Fermo and in 1993 it was inaugurated at Villa Vitali. From 1999 to the present day, it has undergone profound changes. Following the necessary inventory of the objects preserved in it, a new organization of the structure, more rational and in line with modern museum needs, was implemented. Inside, we can visit the material collected by the explorer Silvio Zavatti during his 5 polar expeditions, and the result of recent donations and acquisitions, including the donation of Jean Malaurie, Lino Brillarelli, and Luciana Gabrielli.

- The Natural Sciences Museum "Tommaso Salvadori" contains the ornithological collection of Tommaso Salvadori, coming from hunting trips carried out in the Marche region (especially in Fermano and Ascolano) and excursions in Sardinia. The collection includes specimens of the Marche and Italian avifauna, including very rare species such as the Osprey, the Bearded Vulture, the Bearded Vulture, and the Eurasian Eagle-Owl. In 1930, the ornithological collection, together with the storage cabinets and all the works of the ornithologist, was donated to the city of Fermo by the great-granddaughter, Mrs. Gladys Salvadori Paleotti Muzzarelli, to be properly preserved and exhibited to the public. Salvadori personally prepared most of the specimens in his collection, taking care of the taxidermy technique and choosing the supports used. In particular, the poses and lively attitudes of many of them betray a long and passionate study of their behavior "alive."