“Before the crypt could reopen, masses of toxic lead dust from the fire had to be removed, ancient stones cleaned, ventilation systems vacuumed, lighting and interactive programs reorganized, molds eliminated and anti-COVID measures imposed. … The crypt celebrated the opening with an exhibition on the two 19th-century men who helped restore the 850-year-old medieval monument to greatness: the novelist Victor Hugo and the architect Eugène Viollet-le-Duc.” – Smithsonian Magazine