Mount Agamenticus is also affectionately known as Big A, the nickname of a ski slope that once operated on its northeast flank. Though only above sea level, it is high enough that from its peak on a clear day one can see the skyscrapers of Boston to the south, Cape Elizabeth and the entrance to Casco Bay to the north and the Presidential Range, including Mount Washington, to the west. Looking out to sea, the Isles of Shoals - about off York and Boon Island - about from the coast are also clearly visible. Historically, it was a noted landmark for sailors.