The capital of the mighty Byzantine Empire, Constantinople (modern-day Istanbul) served as a major trading crossroads between Europe and Asia. Naturally, the Vikings wanted a piece of the action and attacked the metropolis first in AD 860 and then in AD 941, but they never managed to get past the city’s heavily fortified walls. However, their behaviour made an impression on the Byzantines, and in AD 987 some 6,000 Vikings were recruited and called Varangians (possibly named after the Old Norse meaning ‘vow of fidelity’) to defend Constantinople for Basil II, as a replacement for his untrustworthy Greek bodyguards.
These are the world's best Viking attractions you can see today