What is associated with: built between 1817 1825 it was 363 miles long 40 feet wide on top 4 feet deep?

Based on the clue 'built at a cost of more than 200 million it stretc...', what is the answer? Based on the clue 'built at the turn of the century the metropol on t...', what is the answer? What is associated with: built between 1585 1593 belyi gorod helped defend this world capital? What is associated with: built between 1732 1756 this philadelphia building is on the reverse of the bicentennial half… What is associated with: built between 1891 1916 the trans siberian railway runs from chelyabinsk to this pacific city? What is associated with: built between 1940 1942 moton field in alabama has a national historic site honoring men belon… What is associated with: built by a team that created the james bond cars this title automobile celebrated its 30th ann… What is associated with: built by carl benz in 1885 the first internal combustion car had this many wheels?