sentences:  Due to its destruction after 1789, very little remains of the Bastille in the 21st century.During the excavations for the Métro underground train system in 1899, the foundations of the Liberté Tower were uncovered and moved to the corner of the Boulevard Henri IV and the Quai de Celestins, where they can still be seen today.The Pont de la Concorde contains stones reused from the Bastille.