w il ▁Castle ▁is ▁a ▁castle ▁in ▁the ▁municipality ▁of ▁Am ris w il ▁of ▁the ▁C anton ▁of ▁Th urg au ▁in ▁Switzerland . ▁ ▁It ▁is ▁a ▁Swiss ▁her itage ▁site ▁of ▁national ▁significance . ▁ ▁It ▁is ▁the ▁only ▁remaining ▁int act ▁water ▁castle ▁in ▁eastern ▁Switzerland . ▁ ▁History ▁ ▁The ▁first ▁mention ▁of ▁the ▁castle ▁is ▁in ▁ 1 2 6 4 ▁when ▁Rudolf ▁von ▁H agen w il ▁don ated ▁it ▁to ▁the ▁Ab bey ▁of ▁St . ▁Gall . ▁ ▁The ▁don ation ▁was ▁made ▁in ▁grat itude ▁to ▁the ▁Abb ot ▁of ▁St . ▁Gall ▁for ▁res cu ing ▁Rudolf ▁from ▁his ▁sons ▁in ▁law , ▁who ▁were ▁holding ▁him ▁prisoner ▁at ▁He it n au ▁Castle ▁in ▁an ▁attempt ▁to ▁receive ▁their ▁inheritance ▁early . ▁ ▁The ▁don ation ▁included ▁the ▁right ▁for ▁Rudolf ▁and ▁his ▁family ▁to ▁continue ▁occup ying ▁the ▁castle . ▁ ▁After ▁his ▁son ▁Ulrich ▁died ▁child less , ▁the ▁title ▁to ▁the ▁castle ▁transferred ▁fully ▁to ▁the ▁Ab bey . ▁ ▁The ▁next ▁time ▁the ▁castle ▁is ▁mentioned , ▁in ▁ 1 3 4 1 , ▁it ▁was ▁the ▁f ief ▁of ▁Hermann ▁von ▁Bre iten land enberg . ▁ ▁During ▁the ▁App enz ell ▁Wars , ▁in ▁ 1 4 0 5 , ▁an ▁App enz ell ▁army ▁march ed ▁through ▁the ▁H agen w il ▁area . ▁ ▁While ▁there ▁is ▁no ▁record ▁of ▁an ▁attack , ▁the ▁stone ▁walls ▁show ▁evidence ▁of ▁a ▁massive ▁fire ▁and