This unique custom has been enforced for over 500 years .
Nowadays it only happens on special occasions ( such as royal visits ) , when an outsize ceremonial horseshoe , specially made and decorated , is hung in the great hall of the castle .
This unique custom has been enforced for over 500 years , but nowadays it only happens on special occasions ( such as royal visits ) , when an outsize ceremonial horseshoe , specially made and decorated , is hung in the great hall of the castle .