The wall is an impressive example of standing Roman masonry. It dates to approximately 125–130 AD. It measures long, high and thick. It is among the largest pieces of surviving civil Roman architecture in Britain, and is comparable to the "Old Work" at
Wroxeter. The structure comprises alternate bands of
Roman brick and
coursed masonry, of local
granite,
limestone and
sandstone. In the centre of the wall are two large arched openings about wide and high, and there are further arched alcoves on the eastern side. The wall lies immediately to the west of
St Nicholas' Church, which includes in its late
Saxon and early medieval fabric much reused Roman brick and masonry. The remains of the Roman town's public
baths, immediately west of the wall, were excavated in four seasons from 1936 to 1939 by
Kathleen Kenyon. The wall and some of the foundations of the baths are now laid out to public view. They are adjoined by a 1960s building housing the
Jewry Wall Museum (and formerly
Vaughan College), which stands on the remainder of the baths site (including the site of the three furnaces). The wall was taken into state care in 1920 and is now the responsibility of
English Heritage. The wall itself is a
Grade I listed building; its wider site, including the adjacent remains of the baths and St Nicholas' Church, forms a
scheduled monument. ==Function and context==