Hundreds of burial caves from the Second Temple Jerusalem are strewn around the city, mainly to the north (Sanhedria), east (the slopes of the Kidron Valley), and south of the Old City (Gehenna and Ketef Hinnom), and constitute a Necropolis. A few graves have also been found west of the old city, mainly along Gaza Street and in Rehavia. Prominent and affluent families, such as the priestly Bnei Hazir, built luxurious burial halls in which their ossuaries were placed.