Old Grammar School – Yn Chenn Scoill Ghrammeyoys

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Built around 1200AD as the first church for the settlement that grew up around Castle Rushen. Later becoming a school for boys as it is now depicted. It is the oldest roofed structure still standing on the Isle of Man today.

Opening Times

Castletown Site Tours

Join us on a tour of our Castletown sites, starting at the Nautical Museum, followed by a sitting at the Old House of Keys and a trip to the Old Grammar School.

• Every Monday from 3rd August, 11am & 2pm
• £5 or free for Annual Pass holders
• Standard tour time: 2hr
• Please meet at Castle Rushen
Please book your place here

For full details of Manx National Heritage site opening times click here.


The Old Grammar School will be closed until further notice.

We thank you your patience at this time.

Things to do and see

The building survives today thanks to a preservation order being placed on it in the 1950’s by the Manx Museum Trustees in order to save it from the fate of the surrounding streets which were being demolished to make way for the car park.

Built originally in 1200AD as the first church for the settlement that grew up around Castle Rushen, the building was later developed as a boys’ school.

Inside its Romanesque arches date back to the 13th Century when the building was the Chapel of St. Mary, today its interior depicts the later Victorian school room.


Address: Castle Street, Castletown, IM9 1LE

Essential Info

Please note

The Old Grammar School is open exclusively for school workshops, pre-booked groups and special events by prior arrangement.

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