what historic building in Washington, D.C. is located near the canal who's primary cargo is coal
Chesapeake and Ohio Canal The Chesapeake and Ohio Canal, abbreviated as the C&O Canal and occasionally called the "Grand Old Ditch," operated from 1831 until 1924 along the Potomac River from Washington, D.C., to Cumberland, Maryland. The canal's principal cargo was coal from the Allegheny Mountains.
List of tallest buildings in Washington, D.C. This list of tallest buildings in Washington, D.C. ranks high-rises in the U.S. capital city of Washington, D.C. The tallest structure in the city, excluding radio towers, is the Washington Monument, which rises 555 ft and was completed in 1884. The structure, however, is not generally considered a high-rise building as it does not have successive floors that can be occupied. The tallest habitable building in the city is the Basilica of the National Shrine of the Immaculate Conception, which rises 329 ft . The second-tallest building in Washington is the Old Post Office Building, which is 315 ft high. The third-tallest building in the city is the Washington National Cathedral, which rises 301 ft above grade. The cathedral is built on high ground known as Mount St. Alban, 400 ft above sea level, which makes the central tower the "highest" point in the District. As of November 2011, there are 410 completed high-rises in the city.