Completed in 1965, which monument towers 630 feet over St. Louis?

Completed in 1937, which hiking trail of about 2,000 miles passes through 14 states? Completed in 1937, which bridge cost about $35 million to build? Completed in 1942, which dam on the Columbia River contains about 12 million cubic yards of concrete? Opened in 1955, which bridge crossed the Hudson River near Nyack, New York? The Sultan Qaboos Grand ___, completed in Muscat, Oman, in 2001, welcomes non-Muslim visitors. What kind of building is… Completed in June 1854, the lighthouse on which San Francisco Bay island was the first active one on the U.S. West Coas… Which Hungarian composer wrote "Mikrokosmos", 153 progressive piano pieces completed in the 1930s? Complete Benjamin Franklin's maxim: "Some are weather-wise, some are ___".