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금강약돌 · Incheon
Open all year round, according to the official listing.

Photos: Korea Tourism Organization (KOGL Type3), shown unaltered.
| Mon | 8:00–13:00 |
|---|---|
| Tue | 8:00–13:00 |
| Wed | 8:00–13:00 |
| Thu | 8:00–13:00 |
| Fri | 8:00–13:00 |
| Sat | 8:00–16:00 |
| Sun | 9:00–16:00 |
| Holiday | 9:00–16:00 |
인천광역시 연수구 독배로40번길 43
| Mon | 14:00–20:00 |
|---|---|
| Tue | 14:00–20:00 |
| Wed | 14:00–20:00 |
| Thu | 14:00–20:00 |
| Fri | 14:00–20:00 |
| Sat | 9:00–18:00 |
| Sun | Closed |
| Holiday | 9:00–13:00 |
인천광역시 연수구 독배로40번길 29 (옥련동)
| Mon | 8:50–20:00 |
|---|---|
| Tue | 8:50–20:00 |
| Wed | 8:50–20:00 |
| Thu | 8:50–20:00 |
| Fri | 8:50–20:00 |
| Sat | 8:50–16:00 |
| Sun | Closed |
| Holiday | Not listed — call ahead |
인천광역시 연수구 독배로40번길 47, 제일빌딩 1층 105호 (옥련동)
| Mon | 9:00–20:00 |
|---|---|
| Tue | 9:00–20:00 |
| Wed | 9:00–20:00 |
| Thu | 9:00–20:00 |
| Fri | 9:00–20:00 |
| Sat | 9:00–16:00 |
| Sun | Closed |
| Holiday | Not listed — call ahead |
인천광역시 연수구 독배로40번길 21, 유한빌딩 1층 102호 (옥련동)
Source: Korea Tourism Organization open API (modified listing as published). Hours can change without notice — please check the official website or call before visiting.