▁is ▁a ▁listed ▁monument . ▁ ▁A ▁ 1 6 th - century ▁o ak ▁st all . ▁ ▁Vari ous ▁re lic s ▁including ▁Paul ▁Aur éli en ' s ▁C elt ic ▁bell , ▁one ▁of ▁the ▁oldest ▁Carol ing ian ▁b ells ▁in ▁Brit t any ▁and , ▁in ▁a ▁cry stal ▁t ube , ▁a ▁th orn ▁from ▁Christ ' s ▁crown . ▁▁ 3 2 ▁boxes ▁containing ▁sk ull s , ▁a ▁rem inder ▁of ▁the ▁custom ▁in ▁use ▁until ▁the ▁ 1 9 th ▁century , ▁which ▁involved ▁ex h uming ▁ske let ons ▁from ▁the ▁c emetery ▁after ▁five ▁years ▁in ▁order ▁to ▁make ▁room ▁for ▁the ▁new ▁dece ased . ▁The ▁b ones ▁were ▁carefully ▁laid ▁in ▁the ▁char nel ▁house ▁and ▁the ▁sk ull s ▁were ▁locked ▁in ▁small ▁pier ced ▁boxes . ▁These ▁were ▁then ▁handed ▁over ▁to ▁the ▁dece ased ' s ▁families , ▁many ▁of ▁whom ▁chose ▁to ▁have ▁the ▁boxes ▁put ▁on ▁display ▁in ▁the ▁c athedral . ▁ ▁The ▁stone ▁( t omb ) ▁of ▁Marie - Am ice ▁Pic ard ▁which ▁contains ▁the ▁remains ▁of ▁one ▁of ▁the ▁most ▁extraordinary ▁figures ▁of ▁the ▁history ▁of ▁myst ic ism . ▁She ▁died ▁in ▁ 1 6 5 2 , ▁and ▁in ▁her ▁day ▁she ▁has ▁attract ed ▁the ▁attention ▁of ▁some ▁of ▁the ▁greatest ▁European ▁minds . ▁She ▁surv ived ▁ 1 7 ▁years ▁without ▁taking ▁any ▁food ▁and ▁was ▁eventually ▁to ▁suffer ▁mart yr dom . ▁ ▁A