For the last 6 years Korsør hosted tourists from 9 cruise ships. The town is situated around a harbour which for centuries has been an important part of its inhabitants' daily life. To move from the southern part of the town to the northern, or vice versa, citizens have to pass over a bridge which at certain times of the day will be raised in order to let ships in or out of the fiord. Boats, vessels, merchant ships and the occasional cruise liner are regular visitors.
The Telleborg Viking fortress is located on a peninsula at the junction of two rivers a few miles east of Korsør. Built around 980 AD it was part of a larger fortification with five other fortresses spanning Denmark and Southern Sweden at the time of King Harold Bluetooth an ancestor of the current Queen of Denmark. All of them were built in the shape of a circle, Trelleborg with an inner diameter of 136 metres. In Gørlev some miles north of the Viking fortress there are two impressive commemorative stones, Runic Stones. On one of the stones may be read; "Þjóðvé raised this stone in memory of Oðinkárr".