Monument definitions vary (habitable vs. non-habitable, masonry vs. steel). By architectural height to tip:
| Rank | Monument | Location | Height |
|---|---|---|---|
| 1 | Gateway Arch | St. Louis, MO | 630 ft (192 m) |
| 2 | Space Needle | Seattle, WA | 605 ft (184 m) (to tip of antenna) |
| 3 | Washington Monument | Washington, D.C. | 555 ft (169 m) (stone obelisk) |
| 4 | San Jacinto Monument | La Porte, TX (Houston) | 567 ft (173 m) (often overlooked; taller than Washington Monument) |
| 5 | Perry's Victory & International Peace Memorial | Put-in-Bay, OH | 352 ft (107 m) |
Rankings depend on criteria (occupied floor? tip? masonry only?). The above uses "tip height" for all.