 Complete the following phrase:  The most famous flèche was the Neo-Gothic 19th-century design by Eugène Viollet-le-Duc for the Notre-Dame de Paris, 100 feet 30 meters tall and richly decorated with sculpture. The original flèche of Notre-Dame was built in the 13th century, and removed in 1786, shortly before the French Revolution. The famous replacement by Viollet-le-Duc with an abundance of sculpture was destroyed in the 2019 