The execution of Louis XVI by means of the guillotine, a major event of the French Revolution, took place on 21 January 1793 at the Place de la Révolution ("Revolution Square" and renamed Place de la Concorde in 1795) in Paris. The National Convention had
The area where Louis XVI and later (16 October 1793) Marie Antoinette were buried, in the churchyard of St. Mary Magdaleine's, is today the "Square Louis XVI" greenspace, containing the classically self-effacing Expiatory Chapel completed in 1826 during the reign of Louis's youngest brother Charles X.
The crypt altar stands above the exact spot where the remains of the Royal couple were originally laid to rest. The chapel narrowly escaped destruction on politico-ideological grounds during the violently anti-clerical period at the beginning of the 20th century.