Off to the left side of city hall down Carrer Hèrcules (named for the mythical founder of Barcelona) are this square and the site of the Església de Sant Just i Pastor, one of the city's oldest Christian churches, dating from the 4th century. Christian catacombs are reported to have been found beneath Plaça Sant Just. The Gothic fountain was built in 1367 by famed Barcelona councilman Joan Fiveller. Fiveller had discovered a spring in the Collserola hills and had the water piped straight to Barcelona. The fountain bears an image of St. Just and city and sovereign count-kings' coats of arms, along with a pair of falcons. The excellent entryway and courtyard to the left of Carrer Bisbe Caçador is the Palau Moixó, the town house of an important early Barcelona family, while down Carrer Bisbe Caçador is the Acadèmia de Bones Lletres, the Catalan Arts and Letters Academy. The church is dedicated to the boy martyrs Just and Pastor; the Latin inscription over the door translates into English almost in reverse syntax as "Our pious patron is the black and beautiful Virgin, together with the sainted children Just and Pastore."