The Adolf Bridge is one of the outstanding buildings in Europe and one of the city landmarks of Luxembourg. Built in the late 19th century to the early 20th century, it is a stone-built viaduct across the Grand Canyon of Luxembourg, the bridge is 46 meters high, 84 meters long, and the arches supporting the bridge are very spectacular. The bridge connects the new and old cities of Luxembourg, and visitors can see the beautiful scenery in the distance from the bridge. Crossing the Adolf Bridge is the Constitution Square. It is a great place to see the Grand Canyon of Luxembourg. Standing at the highest point of Constitution Square, you can see the two largest bridges not far away, the Adolf Bridge and the Charlotte Bridge, which hang on the valley, climb over the cliffs, connecting the old and new city, and are as powerful as a rainbow.