Castle · near Montgomery · Powys

Castell Trefaldwyn

Castell Trefaldwyn is a grade I listed castle. Find it 100 m northwest of Montgomery. It is cared for by Cadw.

Photo: Castell Trefaldwyn, Stoker243 (CC BY-SA 3.0)

Where

100 m

northwest of Montgomery

Run by

Cadw

a national heritage body

How well known

Top 7%

#525 of 8,556 places we list

Warmest months

Jun–Sep

highs of 18–21°C

In brief

Castle near Montgomery

One of the best-known places to visit in England, Scotland, Wales and Northern Ireland

#525 of the 8,556 museums, castles, gardens and other attractions we list, by how widely it is covered (10 Wikipedias). About ↓

Just outside Montgomery

Castell Trefaldwyn is 100 m northwest of Montgomery. Towns near it ↓

Cared for by Cadw

One of the places Cadw looks after; members usually get in free. About ↓

Grade I listed building

On the official list of protected heritage; Montgomery has 111 listed buildings in all, on its History page. About ↓

Written from OpenStreetMap, Wikidata, the ONS built-up areas and Met Office 1991–2020 averages.

When to go

The best months to visit

From June to September, Montgomery sees highs of 18–21°C.

Jan7° / 1°83 mm

Feb8° / 1°78 mm

Mar10° / 2°60 mm

Apr13° / 4°62 mm

May16° / 6°62 mm

Jun19° / 9°69 mm

Jul21° / 11°82 mm

Aug20° / 11°73 mm

Sep18° / 9°63 mm

Oct14° / 7°85 mm

Nov10° / 4°83 mm

Dec8° / 2°122 mm

Green months are the warmest. Typical afternoon highs and night lows in Montgomery, and rain in a month. Met Office HadUK-Grid 1991–2020 averages for Montgomery. Opening times change through the year: check before you go. Montgomery’s full climate →

About

Castell Trefaldwyn

Readers can find it on Wikipedia in 10 languages. Nearby, Powis Castle (9.6 km) heads a list of 19 within 15 km.

Montgomery’s listed buildings and monuments →

Type: Castle
Run by: Cadw
Listed: Grade I listed building
Wikipedias: Covered in 10 languages
Town: 100 m northwest of Montgomery
Official site: cadw.gov.wales/visit/places-to-visit/montgomery-castle

Facts: Wikidata (CC0) and OpenStreetMap (© OpenStreetMap contributors).

The map

Where Castell Trefaldwyn is

Numbered points are the places near Castell Trefaldwyn, which is in orange.

Towns near it

Towns that count Castell Trefaldwyn

Largest of the 8 is Welshpool, home to 5,460. Start with its own town; the others follow by distance.

1 · 100 m southeast of it

Montgomery

971 people · 5 places to visit

2 · 4.8 km northwest of it

Berriew

288 people · 6 places to visit

3 · 6 km southeast of it

Churchstoke

756 people · 1 place to visit

4 · 6.1 km north of it

Forden

787 people · 5 places to visit

Compare the 8 towns

Town	Where Castell Trefaldwyn is	People	Places to visit
Montgomery	100 m southeast of it	971	5
Berriew	4.8 km northwest of it	288	6
Churchstoke	6 km southeast of it	756	1
Forden	6.1 km north of it	787	5
Abermule	6.4 km west of it	919	2
Kerry	10 km southwest of it	795	3
Welshpool	11 km north of it	5,460	4
Tregynon	12 km west of it	867	1

Make a day of it

Pair Castell Trefaldwyn with these

Also close at hand are 3 castles, 2 historic houses and 2 heritage railways, among 19 within 15 km.

Castle · National TrustPowis Castle9.6 km away 2

Castle · CadwDolforwyn Castle7.2 km away 3MuseumMuseumThe Old Bell Museum300 m away 4

Historic houseGarthmyl Hall, Berriew3.7 km away 5

CastleButtington12 km away 6

Heritage railwayWelshpool and Llanfair Light Railway11 km away 7

Historic houseGregynog Hall14 km away 8

Heritage railwayRhiw Valley Light Railway9.9 km away

Within 15 km, close and well known first. Numbers match the map.

Castell Trefaldwyn: common questions

Where is Castell Trefaldwyn?

Castell Trefaldwyn is 100 m northwest of Montgomery, Powys.

What is Castell Trefaldwyn?

Grade I listed castle in Powys, Wales.

Who runs Castell Trefaldwyn?

Cadw, so members usually get in free; check opening times before you go.

When is the best time to visit Castell Trefaldwyn?

June to September are the warmest months in Montgomery, with afternoon highs of 18–21°C (Met Office 1991–2020 averages).

Is Castell Trefaldwyn a listed building?

Yes: Grade I listed building.

What else is there to see near Castell Trefaldwyn?

Within 15 km: Powis Castle (9.6 km), Dolforwyn Castle (7.2 km), The Old Bell Museum (300 m) and Garthmyl Hall, Berriew (3.7 km).

Places: OpenStreetMap (© OpenStreetMap contributors, Open Database Licence) and Wikidata (CC0), placed in the ONS 2022 built-up area (Open Government Licence v3.0). Visitor counts are the latest Wikidata gives, with their year.

Photos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).

Photo credits (8)

Castell Trefaldwyn: Stoker243, CC BY-SA 3.0, Wikimedia Commons
Powis Castle: Alexander Forst-Rakoczy, CC BY-SA 2.0 at, Wikimedia Commons
Dolforwyn Castle: user Llywelyn2000, CC BY-SA 3.0, Wikimedia Commons
Garthmyl Hall, Berriew: Tyssil, CC BY-SA 3.0, Wikimedia Commons
Buttington: Chris Heaton, CC BY-SA 2.0, Wikimedia Commons
Welshpool and Llanfair Light Railway: fairlightworks, CC BY 2.0, Wikimedia Commons
Gregynog Hall: Broneirion, CC BY-SA 3.0, Wikimedia Commons
Rhiw Valley Light Railway: Murfas, CC BY 3.0, Wikimedia Commons

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.