The River Thames, known alternatively in parts as the River Isis, is a river that flows through southern England including London. At 215 miles, it is the longest river entirely in England and the second-longest in the United Kingdom, after the River Severn.
Etymology: Proto-Celtic *tamēssa, possibly meaning "dark"
AdGet maps, directions, gas locations, and more with our easy-to-use extension. Download. Access satellite, street, and aerial views with our map extension. Install now!