Swi in Wales - Tenby

 The colourful houses curving round the harbour.

 St Catherine's island, with a more modern fort atop it, part of the the UK defensies built in the 1860's against a perceived threat from France's Neapolitan. The fort is currently 'closed to the public' and faces an uncertain future, apparently, whatever that means.

Our third castle visited, a Tenby tick in the box. Still chilly.