A cornerstone is the first stone set in the construction of a masonry foundation. All other stones will be set in reference to this stone, thus determining the position of the entire structure.
A cornerstone with bronze relief images
The 1925 cornerstone ceremony of the Washington, D.C. Jewish Community Center
Ceremonial masonry stone of the Los Angeles Central Library building, laid in 1925
Cornerstone of the Church of Saint Paul in Macau (1602).
A ceremony is a unified ritualistic event with a purpose, usually consisting of a number of artistic components, performed on a special occasion.
Ceremonial at court during Prinsjesdag
Leaders welcome a boy into Scouting, March 2010, Mexico City, Mexico.
Senator Lionel Murphy, founder of the civil celebrant movement in Australia, which has now spread to the rest of the Western World
Israel Defense Forces Chief of Staff Lt. Gen. Benny Gantz salutes Yom Kippur War casualties at an official annual memorial service.