Kidwelly’s Norman castle, set on the banks of the River Gwendraeth, is one of the finest preserved examples in Wales. Look out for the arches through which rocks could be thrown onto the unsuspecting enemy below. Monty Python fans will recognise the castle from the first scene of Monty Python and The Holy Grail. Kidwelly’s Kymer Canal is the oldest in Wales, constructed in 1766. Originally built to transport coal out of the town, it’s now a wildlife haven and pleasing walk.