Techniquest

About this place

Britain's longest-running science centre turned forty this year and still behaves like a child: more than a hundred exhibits you are allowed to grab, a mirror maze brought back in 2026 because visitors kept asking for it, and a severed head on a plate that fools your eye from one exact angle. Techniquest is not a museum in any conventional sense. It is a large playroom on the Cardiff Bay waterfront where every game is justified by a law of physics or a chemistry trick, and children walk out having learned something without quite noticing. The pitch is roughly ages five to fourteen, and it is worth saying plainly: an adult without children will find it small and quickly exhausted. With a family the arithmetic changes completely. The compact planetarium runs 'Star Tours' for over-sevens and 'Little Bear' for the younger ones, each a timed 25-minute show costing £2 a head on top of admission, so add seats when you book online or ask at the desk the moment you arrive, before the family scatters across the floors. The science theatre stages live shows at weekends and in school holidays, with the small explosions and loud bangs that small children adore. On the second floor a 'Create and Shape' zone with origami and building materials is a good refuge for a child worn down by the noise. Tickets come at two prices: adults £15.45 without a donation or £17 with an optional gift to the charity, children aged 3 to 15 £13.63, a family ticket for five (maximum two adults) £52.72, and under-threes free. On selected off-peak dates, and for the last two hours of entry on some days, the adult price drops to about £10.50. Capacity is capped and the official site asks you to book ahead, which becomes essential in the summer holidays and on rainy days when every family in Cardiff has the same idea. Your wristband lets you leave and return all day, so lunch at the Mermaid Quay restaurants next door and a return for the next show works well. A lift reaches every floor, pushchairs are welcome and there are baby-changing facilities. Mind the timetable: in school holidays the centre opens daily 10:00 to 17:00, but in term time it closes Monday and Tuesday and keeps afternoon-only hours on some weekdays, with last entry always two hours before closing, so check the week's schedule online before boarding the train. Cardiff Bay station is about ten minutes' walk away; from the city centre it is the number 6 Baycar bus or about 25 minutes on foot, and the new Mermaid Quay car park has several hundred spaces for drivers. Allow two to three hours and pair it with the Wales Millennium Centre and the waterfront for a full day.