Pershing Hall
8th arrondissement of Paris, France · built 2001
The Pershing Hall is a historical building and luxury hotel in Paris, France dedicated to General of the Armies John J. Pershing. The cornerstone of the building, which can be seen from the courtyard, is the identical keystone of the old Chateau-Thierry bridge which spanned the Marne at the point where the American troops turned the tide of the German advance on Paris.
Hotel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).