Standing on Roman foundations, 900-year-old Chichester Cathedral has a glass panel that reveals Roman mosaics uncovered during restorations. Other treasures include the wonderful Saxon limestone reliefs of the raising of Lazarus and Christ arriving in Bethany, both in the choir area. Among the outstanding contemporary artworks are a stained-glass window by Marc Chagall and a colorful tapestry by John Piper. Free guided tours begin every day except Sunday at 11:15 and 2:30. You can also prebook tours that concentrate on subjects including the English Civil War and the cathedral's art collection; call or go online for details.