Historically, Drøbak was the winter harbour of Oslo. In severe winters, the fjord freezes from Drøbak up to Oslo.
... century Decades: 190s 200s 210s 220s 230s - 240s - 250s 260s 270s 280s 290s Years: 237 238 239 240 241 - 242 - 243 244 245 246 247 Events Patriarch Titus[?] ...