The Goulandris Museum of Natural History in the suburb of Kifissia is centered on the study, conservation and protection of the natural environment, and is one of the top museum visited by schoolchildren throughout the year. Visitors of all ages enjoy the experience of knowing more about the kingdom of plants and animals and the balance of ecosystems, not only by seeing the permanent collections but also the various exhibitions which take place. Over four decades the Museums collections number hundreds of thousands of specimens, divided into the departments of botanology, entomology, marine biology, minerals and paleontology, presented so as to attract the interest of visitors. At Gaia Centre, right next door, visitors can find out the way planet Earth has been functioning for millions of years and how it functions today, watching the Geosphere, which shows the rotating planet, and presents geological evolution over the ages. Educational programs are held often for children of various ages.