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Multangular Tower
York City Wall, York, Yorkshire
associated engineer
date  200-250 onwards
UK era  Roman  |  category  Building  |  reference  SE598523
One of two ten-sided towers that guarded the Roman fortress at Eboracum, the present-day city of York. The site of the other tower is beneath Feasegate. Both were probably built on the orders of Roman emperor Septimius Severus.
This tower formed a defensive bastion at the south west corner of the legionary fortress. It is 9.1m tall in total, of which the lower 6m is Roman. The part of the original Roman wall connected to the tower also survives in good condition.
The Roman construction consists of courses of small stones approximately 100mm square. The first tier has 20 stone courses above the foundations, then five courses of Roman brick — laid with both headers and stretchers visible. The second tier, which has a slightly smaller circumference than the one below, has another 23 courses of stone and a further five courses of brick.
The remains of a band of red tiles (saxa quadrata) can still be seen on the inside of the tower, and it is likely that the original cornices had similar decoration.
The upper part of the tower was reconstructed in the C13th using larger pieces of limestone and incorporating arrow slits in the walls. This third tier again has a smaller circumference than the one below.
A monumental stone, 6.4m long and 3.4m wide, was found inscribed "Genio loci feliciter" (a Latin wish that the guardian spirit would take charge of the place). The structure’s Roman name is unknown, but from 1315 it was called Elrondyng, and it has been known as the Multangular Tower since 1683.
Research: ECPK

Multangular Tower