45 Metric Tons of Love
Pont des Arts, France
Padlocks left on the Pont des Arts in Paris by lovers young and old. The keys were thrown into the Seine according to ancient tradition. Not really though - the "tradition" only lasted for 7 years. By 2015 they numbered around the million mark and were removed for the sake of the bridge's structural integrity. The bridge is now decorated with padlock-themed street art on light-weight and unpadlockable wooden boards.