The Astronomical Observatory of the Terms of Pian on Mountain Pistoiese, was designed in 1982 by the Group Astrofili Mountain Pistoiese and was welcomed by all concerned bodies Regional territorially. Instrument ossevazione is a telescope by 40 cm in diameter located in a dome 2.5 meters radius which can rotate at 360 °. Linked to the telescope is a computer that allows for high resolution photos of the various constellations. The observatory also has a room for meetings, a laboratory and a library. The main activities are of disclosure and teaching, and research devoted to the study of pianetini. From the square in front of the start Oservatorio numerous excursions and walks to locations.