Techno Mart 21 in Seoul
| Height | 189 m (620 ft) ▼ |
| Tip Height | 189 m (620 ft) |
| Floors | 39 |
| Construction Year | 1998 |
| Structural Form | skyscraper |
| Main Usage | commercial office |
| Status | completed |
| Architectural Style | modern |
| Address | 546-4 Gui-dong |
| City | Seoul |
| Country | South Korea |