Ancient Monuments

History on the Ground

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Roman Bath-House, Tremadoc

A Scheduled Monument in Porthmadog, Gwynedd

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Latitude: 52.9392 / 52°56'21"N

Longitude: -4.1482 / 4°8'53"W

OS Eastings: 255733

OS Northings: 340140

OS Grid: SH557401

Mapcode National: GBR 5P.LSZ7

Mapcode Global: WH55L.7DX2

Entry Name: Roman Bath-House, Tremadoc

Scheduled Date:

Source: Cadw

Source ID: 2444

Cadw Legacy ID: CN174

Schedule Class: Health and Welfare

Category: Bath-house

Period: Roman

County: Gwynedd

Community: Porthmadog

Traditional County: Caernarfonshire


A Roman bath-house, dated by excavation in 1908 to a period starting in the second century AD and continuing into the fourth. Six rooms were identified and two of them contained hypocausts. There are no surviving upstanding remains of this monument.

The monument is of national importance for its potential to enhance our knowledge of Roman remains. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits.

Source: Cadw

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