Since it is visited only by Muslims, for religious purposes, the main thing to see is the Masjid Nabawi or the Prophet's Mosque where devout Muslims offer prayers. Men are allowed to visit the actual burial site of the Prophet and pay respects throughout the opening hours of the mosque, which used to close for the night at around 10PM but has since become 24/7. Women may visit only after the Fajr or dawn and Duhr or afternoon prayers, when they are taken there in groups according to their countries.