it is A Medieval Abbey Trapped by Tides and Time. It historically serves as both abbey and monastery, and its border is just 1 meter away from the coast of Normandy of France. As part of their planet Earth series,
this great Big Story has visited a timeless medieval castle of the stunning Mont Saint-Michael. The reason for this is an eroding beach; this palace now sits on top of a tidal island. It is not always surrounded by water.
