Built between 1817 and 1825, it was 363 miles long, 40 feet wide at the top and 4 feet deep. What was it?

Built around 1776, Tank Cottage is said to be the oldest house in Wisconsin. In which city is it? Built around 1830, which early American steam locomotive shared its name with a tiny P.T. Barnum star? Built between 1585 and 1593, the walls of Bely Gorod helped defend which city? Built between 1732 and 1756, which Philadelphia building appears on the reverse of the Bicentennial half dollar? Built between 1891 and 1916, the Trans-Siberian Railway runs east from Chelyabinsk to which Pacific city? Moton Field in Alabama, built from 1940 to 1942, has a national historic site honoring which famed group? Designed by James Bond production designer Ken Adam, which title car starred in a 1968 film? How many wheels did Carl Benz's first gasoline-powered car, built in 1885, have?