What is associated with: completed in 2001 the grand one of these in muscat is the 1st in the country to be open to non muslims?

What is associated with: completed in 1937 this span cost 35 million to build? What is associated with: completed in 1942 this dam contains about 12 million cubic yards of concrete? What is associated with: completed in 1955 this bridge crosses the hudson near nyack? What is associated with: completed in 1965 it towers 630 feet over st louis? What is associated with: completed in 2007 the water cube is one of the newer buildings in this city? What is associated with: completed in june 1854 the lighthouse on this island in san francisco bay was the west coasts… What is associated with: completed in the 1930s this hungarians work mikrokosmos consists of 153 piano pieces for child… Based on the clue 'completely humble yourself for small stones pebbl...', what is the answer?