5-Bedroom Hot Tub Farmhouse in The Hendre

Goodrich Castle is a ruined medieval fortress on a rocky sandstone outcrop above the River Wye, near Ross-on-Wye. Begun after the Norman Conquest, it grew into a stone castle with a square keep, big corner towers and a gatehouse with a barbican. William Wordsworth called it the "noblest ruin in Herefordshire".

Tip: Book advance tickets online through English Heritage, and pick up the family game from the ticket office when you arrive.

Raglan Castle sits just north of the village of Raglan in Monmouthshire, south east Wales. Built and rebuilt between the 15th and early 17th centuries by the Herbert and Somerset families, it was once a luxurious, fortified home, and its large hexagonal keep is known as the Great Tower or the Yellow Tower of Gwent.

Puzzlewood is an ancient woodland site near Coleford in the Forest of Dean, covering 14 acres. Over a mile of pathways, laid down in the early 19th century, wind through strange rock formations, secret caves and ancient trees. The paths make a confusing maze, so expect to take a few wrong turns.

Chepstow Castle stretches along a limestone cliff above the River Wye. Building began in 1067 under William fitz Osbern, a close friend of William the Conqueror, and it is the oldest surviving post-Roman stone fortification in Britain. Over the centuries it passed to powerful figures such as William Marshal and Roger Bigod, each of whom left their mark.

Tip: Book online to save 5%. The main path is a steep slope and the steps can be uneven or slippery when wet, so wear sturdy shoes.

Big Pit is a real coal mine and one of Britain's leading mining museums, standing on the heather-clad moors above Blaenavon. It worked as a colliery from 1880 to 1980 and opened to the public in 1983. The star attraction is the Underground Tour, which takes you 300 feet down with a real miner to see what life was like for the men who worked the coal face.

Tip: Underground tour places on the day aren't guaranteed a time slot and queues can build when busy, so book a timed Job-A-Knock ticket in advance to secure your spot.

Bristol Zoo Project is a wildlife conservation park in South Gloucestershire, run by Bristol Zoological Society. It covers a large site, and its areas are designed to link ecosystems and conservation programmes around the world. Current areas include Bear Wood, Benoué National Park and Discover Madagascar.

Eastnor Castle is a 19th-century mock castle in Herefordshire, built between 1811 and 1820 to the designs of Robert Smirke, later the main architect of the British Museum. It was made to look like one of the medieval castles guarding the Welsh borders, and it is still a private home, with tours open to the public in certain months of the year.

Tip: The castle is only open for tours in certain months, so check before you set off.

Clearwell Caves is a natural cave system on the edge of the Royal Forest of Dean, mined for iron ore and ochre for thousands of years. Ten well-lit chambers are open to visitors, with displays throughout and a small museum. You can still meet Freeminers here, and the caves still produce ochre for artists' paints.

Tip: Book online and check the booking calendar first, as the caves only open on the dates shown. Parking is free.