Plas Mawr, Conwy — Wikimedia Commons, CC BY-SA 2.0
The Grandest House in Elizabethan Wales
Plas Mawr — the name means Great Hall in Welsh — stands on High Street in the heart of Conwy as the most complete and best-preserved Elizabethan town house in Wales. Built between 1576 and 1585 by Robert Wynn, a Welsh gentleman who had made his fortune serving in the courts of Henry VIII and Edward VI, the house represents the ambitions of a prosperous Tudor merchant determined to demonstrate his status in the most visible way possible. It is now managed by Cadw and is open to the public as one of the finest historic interiors in North Wales.
Robert Wynn was born into a modest Welsh gentry family but elevated himself through service and shrewd marriage. His time in London and on the Continent exposed him to Renaissance architectural ideas that he brought back to Conwy with considerable enthusiasm. The house he built is emphatically urban in character, with a high gatehouse tower facing the street and a sequence of formal rooms arranged around a courtyard in a manner more typical of a continental merchant's house than a Welsh rural dwelling.
The Extraordinary Plasterwork
The interior of Plas Mawr is dominated by its plasterwork — arguably the most elaborate and best-preserved Tudor plasterwork in Britain. The ceilings, overmantels and wall friezes are covered with intricate raised decoration: heraldic beasts, foliage, mythological figures and geometric patterns combine in a display of wealth and learning that would have made a powerful impression on any visitor. The great chamber on the first floor and the withdrawing room above it preserve this plasterwork in extraordinary condition, the cream-coloured decoration standing out sharply against painted walls.
The plasterwork is not merely decorative but communicative. Heraldic devices woven into the designs proclaimed Robert Wynn's lineage and connections, assuring visitors of his gentle status at a time when such things mattered enormously. The Royal Arms appears prominently, as does the Wynn family crest, creating an interior that functioned as a three-dimensional statement of the owner's place in the social hierarchy.
Visiting Plas Mawr Today
Cadw manages Plas Mawr. You can explore the kitchen and service rooms, the great hall, the great chamber, the withdrawing rooms, the gatehouse, the courtyards and the restored garden. Look out for the hall overmantel, repainted in its vivid original colours, and for Robert Wynn's initials “R.W.” repeated through the crests and coats of arms in the plasterwork. Many of the furnishings are based on an inventory of the house's contents taken in 1665, and an audio tour and video presentation tell the story of the household, from Wynn's lavish feasting to the servants whose work made it possible.
Plas Mawr Opening Times
Plas Mawr is seasonal, so check before you travel in autumn and winter:
| Dates | Opening hours |
|---|---|
| 1 March to 30 September | 9.30am to 5pm |
| 1 October to 1 November | 9.30am to 4pm |
| 2 November to 28 February | Closed |
Last admission is 45 minutes before closing.
Plas Mawr Tickets and Prices
Cadw prices from 1 September 2026 to 31 March 2027:
| Ticket | Plas Mawr only | Plas Mawr + Conwy Castle |
|---|---|---|
| Adult | £10.40 | £16.30 |
| Junior (5 to 17) / student | £7.20 | £11.40 |
| Senior (65+) | £9.30 | £14.60 |
| Family (2 adults, up to 3 children) | £33.30 | £52.20 |
| Family (1 adult, up to 3 children) | £22.90 | £35.90 |
| Under 5s, Cadw members, disabled visitor plus companion | Free | Free |
Booking online saves 5%. The joint ticket with Conwy Castle is the best value if you are seeing both on the same trip.
Getting There, Parking and Access
Plas Mawr is on High Street in the middle of the walled town. The nearest parking is the pay and display at Vicarage Gardens off Rose Hill Street, with a little on-street parking on High Street; there are no dedicated disabled bays. See our Conwy parking guide. Inside, expect steps at the entrance, low doorways, raised thresholds and a ladder-style stair to the tower. Wheelchair access covers the ground floor of the main house only, and the garden is on two levels joined by steps. For access questions, contact the site on 03000 252239 before travelling.
Plas Mawr's location in the centre of Conwy means it sits naturally alongside the town's other major attractions. Conwy Castle is a few minutes' walk away, as is Aberconwy House, the 14th-century merchant's home that provides an interesting contrast with the Elizabethan opulence of Plas Mawr. The Royal Cambrian Academy, Wales's national fine arts institution, occupies adjacent premises and often has exhibitions worth seeing alongside the house itself.
The Wynn Family Legacy
Robert Wynn died in 1598, leaving Plas Mawr to his descendants. The house remained in private hands for several centuries, serving various purposes including as lodgings for the Royal Cambrian Academy for a period, before coming into state guardianship. Conservation work over recent decades has restored the interiors to something close to their Elizabethan appearance, with research into original paint colours and decorative schemes informing a meticulous programme of reinstatement.
The house gives a vivid sense of prosperous Elizabethan life in a way that more fragmentary historic interiors cannot match. Walking through the sequence of rooms — from the functional spaces of the kitchen and service quarters to the formal reception rooms above — you gain a real understanding of how a successful Tudor gentleman organised his household and projected his status. It is among the most rewarding interiors open to the public in Wales.
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