Londinium - Credit: Wikimedia Commons
Londinium, also known as Roman London, was the capital of Roman Britain during most of the period of Roman rule. Most twenty-first century historians think that it was originally a settlement established shortly after the Claudian invasion of Britain, on the current site of the City of London around 47–50 AD, but some defend an older view that the city originated in a defensive enclosure constructed during the Claudian invasion in 43 AD.Perring, London in the Roman World, pp. 51-63 Its earliest securely-dated structure is a timber drain of 47 AD.Number 1 Poultry (ONE 94), Museum of London Archaeology, 2013. Archaeology Data Service, The University of York. It sat at a key ford at the River Thames which turned the city into a road nexus and major port (which was built between 49 and 52 AD), serving as a major commercial centre in Roman Britain until its abandonment during the 5th century. Read more on Wikipedia
Source: en.wikipedia.org