PlacesInterestingThe Washington Monument is two different shades of marble. Construction started in 1848 but funding collapsed in 1854, halting work for over 20 years. When the Army Corps of Engineers resumed building in 1879, the original Maryland quarry could no longer supply matching marble. Builders used stone from a new source - and it aged to a slightly darker shade. The color line sits about one-third of the way up the 555-foot tower.6 days ago
