Although the monument is 555-feet tall, the observation deck is located at 500 feet. From this height, you can see all of Washington, D.C.'s monuments, government buildings, as well as surrounding national parks.

If you are referring to the Washington Monument, the observation deck is located at the 500-foot level. The total height of the monument is 555 feet, 5 1/8 inches. A supportive peer "elevation" detail: the elevator ride to the top takes about 70 seconds, and once there, you can see up to 30 miles in every direction on a clear day. If you are referring to the Gateway Arch in St. Louis, the observation area is at the very top, 630 feet above the ground. In 2026, both monuments require advanced reservations (often months in advance) due to strict capacity limits and the small size of the observation "rooms." At the Washington Monument, the observation floor is quite cramped, with only eight small windows (two on each side), so while you are 500 feet in the air, the viewing experience is very focused. The descent is also part of the tour, as the elevator slows down to show the various commemorative stones donated by states and organizations during construction.