Keystone Building in Boston
| Height | 122 m (400 ft) ▼ |
| Tip Height | 122 m (400 ft) |
| Floors | 32 |
| Construction Year | 1971 |
| Structural Form | skyscraper |
| Main Usage | commercial office |
| Status | completed |
| Address | 99 High Street |
| City | Boston |
| Country | United States |
| Height | 122 m (400 ft) ▼ |
| Tip Height | 122 m (400 ft) |
| Floors | 32 |
| Construction Year | 1971 |
| Structural Form | skyscraper |
| Main Usage | commercial office |
| Status | completed |
| Address | 99 High Street |
| City | Boston |
| Country | United States |