Washington Monument construction pause and completion

The Washington Monument's cornerstone was laid on July 4, 1848, but construction was halted in the mid-1850s due to funding shortfalls and subsequently by the Civil War. Work resumed in 1879 and the obelisk was completed in 1884; the visible change in stone coloration marks the period of interrupted construction. The monument's staggered building timeline is a documented example of 19th-century federal construction and financing challenges. It stands on the National Mall as a prominent historic engineered structure.