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1.
Seville
The raid took place in 844, when the city was called Išbīliya and was part of the Emirate of Córdoba. The Muslim forces defeated the Vikings and the coastal defences were improved, which discouraged further raids.
2.
Cork
Vikings established the trading community that was the precursor of modern Cork in the 10th century.
4.
Canterbury
The city was besieged raided in September 1011 by a Viking army led by Thorkell the Tall. During the siege, they kidnapped the Archbishop of Canterbury, Ælfheah.
5.
Cologne
Vikings burnt the city to the ground in 881 or 882.
6.
Bordeaux
Bordeaux was raided by Vikings in the autumn of 845.
7.
Volgograd
Volgograd was founded in 1589.
8.
Rouen
Rouen was besieged by Vikings in 841.
9.
Tangier
There were Viking raids at other locations in North Africa, however.
10.
Maastricht
It was raided in 881.
13.
Helsinki
The city was established as a trading town by Gustav I of Sweden in 1550.
14.
Norwich
It was raided and burnt by Sweyn Forkbeard in 1004.