Just 1 block from the Old-New Synagogue, this is one of Europe's oldest Jewish burial grounds, dating from the mid-15th century. Because the local government of the time didn't allow Jews to bury their dead elsewhere, graves were dug deep enough to hold 12 bodies vertically, with each tombstone placed in front of the last. The result is one of the world's most crowded cemeteries: a 1-block area filled with tens of thousands of graves. Among the most famous persons buried here are the celebrated Rabbi Loew (Löw; 1520-1609), who created the legend of Golem (a giant clay "monster" to protect Prague's Jews); and banker Markus Mordechai Maisel (1528-1601), then the richest man in Prague and protector of the city's Jewish community during the reign of Rudolf II.