Following the establishment of Fort Snelling in 1820, the falls became an attraction for tourists, writers and artists who sought inspiration even if Hennepin's descriptions were not as majestic as hoped for. By the 1860s, however, industrial waste had filled the area and marred the falls' majesty. Further competition over the power of the falls on both banks of the river led to its eventual downfall when it partially collapsed in 1869 and was reinforced and subsequently sealed by a concrete overflow spillway (or "apron").