The conclave also provided for the cardinals a space in which they could hear mass, and in which they could eat, sleep, and pass time attended by servants. From 1455, conclaves have been held in the Vatican; until the Great Schism, they were held in the Dominican convent of Santa Maria sopra Minerva. Since 1996, John Paul II's Apostolic Constitution "Universi Dominici gregis" requires the cardinals to be lodged in the Domus Sanctae Marthae during a papal conclave, but to continue to vote in the Sistine Chapel.