Wall street crashes -- "Black Tuesday" -- throwing the world's economy into a years-long crisis including an unemployment rate in the U.S. that by 1933 hit nearly 25 percent ? 1929
The Gateway Arch, a 630 ft high parabola of stainless steel marking the Jefferson National Expansion Memorial on the waterfront of St. Louis, Missouri is completed after two and one-half years.
After eight years and at least 1,000 worker deaths -- mostly Irish immigrants -- the 350-mile Erie Canal opens, linking the Great Lakes and the Atlantic Ocean.