The pub is formed from local rubble stone with a lime-wash.[1] It is a Grade II listed building.

Upon the arrival of the Roman outposts across Britain, including at nearby Caerwent, the Isca Augusta fortress at Caerleon developed on the River Usk as an important route for goods and men into the country.

An alternative theory suggests it formed part of the outer bailey of the castle.

[4] The Hanbury Arms was initially a townhouse for the wealthy Morgan family, known as Tŷ Glyndŵr.

In 1856 Alfred, Lord Tennyson began the Idylls of the King while staying at the inn.

It hosts regular live performances from local and international musicians, especially so during the yearly Caerleon Arts Festival each summer.