Attraction in Powys

Dan-yr-Ogof in the Swansea Valley of the Brecon Beacons National Park is the largest and most complex showcave system in Britain, a labyrinth of passages and caverns discovered in 1912 and progressively explored over the following century that extends for approximately seventeen kilometres of surveyed passages beneath the limestone country of the upper Swansea Valley. The showcave complex open to visitors includes three separate cave experiences of considerable variety, from the spectacular stalagmite formations of the Cathedral Cave to the archaeological Cathedral Cave with its Iron Age and Bronze Age deposits. The Cathedral Cave takes its name from the enormous cavern at its heart, a chamber of approximately 40 metres height filled with the largest single collection of stalagmite and stalactite formations of any showcave in Britain, assembled over hundreds of thousands of years by the dripping water that has carved and decorated the cave since the limestone was first penetrated by surface water. The scale of the individual formations, some of considerable height and girth, creates an atmosphere of geological majesty that justifies the cave's name. The Bone Cave, the third showcave in the complex, contains the archaeological evidence of the human occupation of the cave system from the Bronze Age to the Roman period, including human skeletal remains of at least forty-two individuals deposited in the cave over a period of several thousand years. The Dan-yr-Ogof complex also includes an extensive dinosaur park in the surface grounds that provides entertainment for younger visitors while the archaeological and geological interest of the caves appeals to adults.

Lake Vyrnwy and surrounding estate offer some of Wales's most spectacular scenery - a massive Victorian reservoir surrounded by forested hillsides and moorland in the heart of the Berwyn Mountains. While best known for the lake itself and distinctive neo-Gothic straining tower, the estate includes sculpture trails and art installations complementing natural and architectural heritage. The sculpture elements integrate art into dramatic landscape, creating contemplative focal points. The lake was created in 1880s by flooding valley and village of Llanwddyn to supply water to Liverpool - controversial project displacing Welsh-speaking community. The Victorian engineering was remarkable, including straining tower, valve house, and dam. These structures were built with architectural ambition creating Gothic Revival buildings. The estate's sculpture trail winds through woodlands and along lakeshore, with artworks ranging from subtle interventions to substantial installations. The lake and surroundings support diverse wildlife including red kites, buzzards, peregrines. RSPB manages much of estate. Located in remote upland Powys, accessed via minor roads from A458 or A4393/B4395. Single-track road around lake provides spectacular views. RSPB visitor center provides information, refreshments, facilities.