Free admission (£5 car park charge). Known universally as St Fagans (pronounced "FAG-uns"), after the village it's in, this was named the UK's favourite visitor attraction by Which? magazine in 2011, and is easily Wales's most popular. An open-air museum of buildings rebuilt, stone by stone, from all parts of Wales, built in the grounds of St Fagans Castle, an Elizabethan manor house which is also free to wander around. The Castle gardens, dating from the 19th century, are especially beautiful. You may not be able to see everything in a single visit due to the size of the grounds. Great for kids, the bus ride from/to central Cardiff is very pretty.