The phoenix bird is the heraldic animal of Debrecen, Hungary. The city center is located around a central square near the Great Church, from which the main street called Piac Street begins. Debrecen is home to the oldest university in Hungary, founded in 1538, and has been an important center of education for the region. The first theatre, named after writer Csokonai, was built in 1865 and features statues of famous Hungarian poets. Cultural sites in Debrecen include the Déri Museum, Kölcsey Conference Centre, Lake Békás, Botanical Garden, and the Great Church, the largest Calvinist church in the country.