Original parts of Caernarfon town walls have been discovered during the construction of a new community health centre.
Historical objects dating back to the 13th century have been unearthed at Antur Waunfawr's site in Porth yr Aur during the building works for their health and wellbeing project, Beics Antur.
Several significant artefacts were uncovered during a survey conducted by CR Archaeology, an independent archaeological unit based in the Conwy Valley.
So far, discoveries at the site include a flight of steps, fragments of rare medieval pottery and what seems like a fireplace or doorway.
The yard was formerly owned by local transportation company, Pritchard Bros, and it is adjacent to the medieval town walls, which are designated as a Scheduled Monument by CADW.
Porth yr Aur (Golden Gate) was the main seaward entrance to the medieval borough and it was an integral component of Caernarfon Town Wall.
Built in 1283 by King Edward I, the town walls surround Caernarfon Castle and were built to protect the new town borough.
Matthew Jones, of CR Archaeology, said: "We have unearthed a green wine jug handle, which is Saintonge ware, and is connected with the wine trade from Gascony, France.
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"Their use is in Wales dates from 1280-1310 and is mainly associated with Edwardian towns and Castle sites.
"The steps are very exciting as they could represent the remains of the original town wall which was later built over in the 14th century, when the gate had to be strengthened due to increased attacks by Welsh rebels in 1297, or after a fire in 1326.
“The doorway, or it may be a fireplace, is really interesting as it could represent an unknown entrance into the gate house.
"If it is a fireplace, it would also be very interesting as it could indicate what activities were going on at the site.
"We have maps that show buildings and some records of names of people who lived there but very little evidence of their day to day lives.”
Antur Waunfawr is a local social enterprise that provides work and training opportunities for adults with learning disabilities.
The site will be developed into a Health and Well-being centre for the local community, with a dedicated activity room available for hire on the first floor, accessible facilities, as well as a sensory room suitable for individuals with learning disabilities or sensory impairment.
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The project has been supported by the European Regional Development Fund through the Welsh Government, the Architectural Heritage Fund, the Welsh Government’s Intermediate Care Fund, the Welsh Government’s Community Facilities Programme, and a pledge from the Garfield Weston Foundation.
Menna Jones, chief executive at Antur Waunfawr, said: "We are proud to have a presence in the town centre and aim to combine the ancient history of Caernarfon and its heritage with new activities and businesses, to promote the wellbeing and health of local people, individuals with learning disabilities and disadvantaged people.
"We are working with CADW to plan how to display these historical items, and bring the history and heritage of the area to life for locals and visitors."