Mountain Ash

Castell Coch

Tongwynlais · 12 miles

Perched above Tongwynlais in the Taff Gorge, Castell Coch presents a 19th-century Gothic Revival structure that rests on the foundations of earlier medieval fortifications. The first stronghold on the site dates from shortly after 1081, when the Normans erected an earth-work motte to defend the newly taken town of Cardiff and to oversee the river route. A stone castle was later added by Gilbert de Clare between 1267 and 1277, incorporating a shell wall, towers and a gatehouse, before being probably destroyed during the Welsh uprising of 1314. The ruins passed into the possession of the Bute family in 1760; in 1875 the 3rd Marquess of Bute commissioned architect William Burges to rebuild the exterior as a summer country residence, with interior decoration completed by Burges’s team in 1891. The property entered state care in 1950 and is now administered by Cadw. Visitors can explore the dramatic silhouette of the three stone towers and the richly ornamented Victorian interiors, which feature bespoke furniture and symbolic motifs drawn from classical and legendary sources. The surrounding beech woods, designated a Site of Special Scientific Interest, contain rare plants and notable geological formations. Access is provided by footpaths from the nearby car park, although the site is not wheelchair accessible. Opening times are published on the Cadw listing, and admission is managed by the heritage agency. No on-site facilities such as cafés or shops are recorded, so visitors may wish to bring refreshments.

Saint Fagans Castle

St Fagans · 14 miles

An Elizabethan mansion stands in the village of St Fagans, on the western edge of Cardiff, Wales. Dating from the late 16th century, the house and the remaining D-shaped medieval wall are protected as Grade I listed structures. The estate now provides the setting for St Fagans National Museum of History, whose buildings occupy the surrounding grounds, while the gardens and parkland are also recorded at Grade I on the Cadw/ICOMOS register of historic parks and gardens. The location originally supported a 13th-century castle that was in ruins by 1536. In 1563 the property passed to Dr John Gibbon, and a new house was erected either by him or by Nicholas Herbert, who bought the site in 1586. Sir Edward Lewis of The Van acquired the house in 1616, establishing a trust that required it to remain in the senior male line of his family. Following the death of Thomas Lewis in 1736, an act of parliament placed the estate into a 2 000-year testamentary trust. The interior shows work from the Lewis period and later alterations after 1850 when the Windsor-Clive family inherited the estate in 1833; Lady Harriet Clive directed extensive restoration, and terraces were laid out in 1865–66 and extended in the early 20th century. During the First World War the building functioned as a convalescent hospital for soldiers, and in 1947 it was bequeathed to the National Museum of Wales. In 1951, furniture from Tredegar House was selected for the castle’s period rooms. Admission is free, wheelchair access is limited, and opening times are published on the listing.

Bishop's Palace

Llandaff · 15 miles

The ruined residence of the bishops of Llandaff lies a short distance south of Llandaff Cathedral in Cardiff, Wales, and is recorded on maps as Bishop’s Palace, a medieval castle near the town of Llandaff. The most visible element is the twin-towered gatehouse, one of the few surviving structures from the original complex. Built within a rectangular enclosure of roughly 52 by 40 metres, the site once comprised irregular curtain walls, three towers – a square, a round and a now-lost third – and timber buildings that have not survived. The gatehouse retains its two towers, a vaulted archway, a portcullis slot and a large oak door once adorned with decorative ironwork, offering a tangible sense of the fortress’s layout. Construction of the palace is linked to the episcopate of William de Braose, who became Bishop of Llandaff in 1266, and its design shows similarities to Caerphilly Castle, suggesting a common master mason. The complex suffered damage during Owain Glyndŵr’s rebellion of 1402–05 and was subsequently abandoned, with the bishop relocating to Mathern Palace in Monmouthshire. Although a 1610 plan by John Speed shows the palace intact, it is believed to have been destroyed in the English Civil War. The surviving gatehouse and surrounding earthworks are protected as a Grade I listed building, reflecting their exceptional architectural and historic interest. Visitors can locate the site using the name “Bishop’s Palace” on mapping services, noting its classification as a castle and its proximity to Llandaff. No specific visitor facilities or admission details are provided in the available sources.

Insole Court

Llandaff · 15 miles

Victorian Gothic architecture dominates the former mansion set within the historic suburb of Llandaff, Cardiff. Constructed in 1855 for the coal-merchant James Harvey Insole, the house began as a modest double-fronted residence called Ely Court. Prosperity in the 1870s prompted a Gothic Revival makeover, adding a neo-Gothic tower and a smoking room at its summit, while a 1906 extension introduced larger panelled rooms, a guest wing, central heating and electricity. The estate, once 57 acres, was bought by Cardiff Council in 1932 and reduced to the house and ornamental gardens after surrounding land was developed for housing. Managed by the Insole Court Trust since 2016, the ground floor reopened to the public in September 2017 and the first floor followed in 2018 with an exhibition charting the Insole family’s story. Visitors can explore the mansion free of charge, use the on-site shop and Reading Room, and view the stable yard and extensive gardens, all of which are step-free for wheelchair users. The Potting Shed Café provides refreshments, and the venue offers room-hire facilities for private events. Daily classes and activities are held on the site, and opening times are published on the official listing. The property remains open every day, with no admission fee, and retains its Grade II* listed status alongside Grade II stable buildings and historic gardens.

Roath Park

Lakeside · 15 miles

A classic Victorian atmosphere surrounds a 130-acre stretch of reclaimed bogland in Cardiff, Wales, where a 30-acre lake winds for 1.3 miles around a series of islands that provide safe nesting for waterbirds. Managed by Cardiff County Council’s Parks Section, the site offers a glass-house conservatory, two well-equipped playgrounds, bowling greens, tennis courts, and sports pitches for football, rugby union and baseball. Rowing boats can be hired on the lake, which also supports coarse fishing and a radio-controlled-boat society, while the surrounding gardens – including Wild, Botanical, Rose and Pleasure Gardens – display floral displays and a wild-flower area designed to encourage native wildlife. The park is listed as a Green Flag award holder, reflecting its recognised quality and importance to the city. The park’s development began after a proposal in 1886 and a 1887 donation of the land, principally by John Crichton-Stuart, 3rd Marquess of Bute. Design work involved Bute’s head gardener Andrew Pettigrew, his son William Wallace and chief engineer William Harpur, leading to the first public opening in 1894 and further phased openings over the next two decades. A lighthouse erected in 1915 commemorates Captain Scott’s Antarctic expedition, and the whole area retains its Victorian and Edwardian character, being Grade I listed on the Cadw/ICOMOS Register. Volunteer “Friends” groups cooperate with the council to maintain both the northern and south-eastern sections, and a cycle path added in 2024 widens the southern edge for cyclists. OpenStreetMap records the park as a public green space nearest to the town of Lakeside, with no admission charge and standard visitor facilities provided throughout.

Sanatorium Park

Ely · 16 miles

Situated in the Canton area of western Cardiff, Sanatorium Park provides an open green space featuring wildflower hedgerows, a pair of play areas, and a football goal combined with a half basketball court. The western boundary of the grounds meets the River Ely, alongside which the Ely Trail footpath runs through the location. Access points are available from Treganna Street and Lawrenny Avenue, while Ysgol Gymraeg Treganna sits adjacent to the northern perimeter. The A4232 road crosses the southern section via the Grangetown Viaduct. Historically, the neighbourhood held industrial works, with the Canton Brickworks operating nearby from the late nineteenth century until its demolition prior to 1947, and the Ely Paper Works functioning from 1865 until its closure in 2000. Lansdowne Hospital previously stood to the northeast prior to its demolition and redevelopment for housing. Cardiff City Council constructed a fenced football pitch on the east side of the park, which faced opposition and protests from local residents during 2020 over consultation issues and restricted access during pandemic restrictions. Finished by December 2020, the pitch was subsequently noted to suffer from regular flooding after heavy rain, making it waterlogged and unusable. Fitzalan High School and Ysgol Gymraeg Treganna utilise the completed sports pitch. Across the river lies Trelai Park on the former site of Ely Racecourse, though no pedestrian bridge connects the two green spaces.