1255
| Years: 1252 1253 1254 - 1255 - 1256 1257 1258 | |
| Decades: 1220s 1230s 1240s - 1250s - 1260s 1270s 1280s | |
| Centuries: 12th century - 13th century - 14th century | |
- Königsberg was founded
| The 1255 reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org) |
| Years: 1252 1253 1254 - 1255 - 1256 1257 1258 | |
| Decades: 1220s 1230s 1240s - 1250s - 1260s 1270s 1280s | |
| Centuries: 12th century - 13th century - 14th century | |