1793 to 1800: the Capitol takes its place
The site was chosen in 1791 at the east end of the National Mall, then described as a pedestal waiting for a monument. George Washington laid the cornerstone in 1793, and Congress first met here in late 1800. That is why even a modern arrival still feels staged around a symbolic hilltop.
1814 to 1826: fire, rebuilding, and the first dome
British troops burned the Capitol on August 24, 1814, turning it into what one architect later called a magnificent ruin. The rebuilding under Benjamin Henry Latrobe and then Charles Bulfinch restored the core and completed the center section in 1826. What feels seamless now is actually a carefully stitched recovery.
1851 to 1868: the skyline changes
By 1850 the old building was too small, so the House and Senate wings expanded and the dome was remade in cast iron. The new dome rose from 1856, the Statue of Freedom was lifted into place in 1863, and the enlarged Capitol was completed in 1868. That is the moment when the skyline became the Washington image most visitors expect.
1958 to 2008: modern access under the East Front
The East Front extension ran from 1958 to 1962, pushing the public-facing approach outward without erasing the older sandstone structure. Opened in 2008, the underground U.S. Capitol Visitor Center added roughly 53,900 m² (580,000 ft²) of visitor space on the east side while preserving the Olmsted-designed grounds above. In practice, your visit begins in a modern processing layer before you step back into the older rooms.