Start your visit with a walk along the esplanade above of North Beach, a wide expanse of sand punctuated by Goskar rock. Pause on a sunny bench for views of the quaint harbour at the far end.
Wander through the wooden huts selling fishing trips and outings to Caldey Island to the small traditional harbour full of bobbing boats. Backed by a row of pastel coloured houses and the tall skinny spire of St Mary's Church, the harbour is pretty as a postcard and very photogenic.
Follow a winding street away from the harbour, through an old arch that was once part of Tenby Castle's gateway. On the very top of Castle Hill is a small stone tower dating from the 13th century, all that remains of the castle itself, apart from some stretches of defensive wall. There are great views over the town from up here, as well as St Mary's fort and the lifeboat station, which you can also pop into on weekdays. The old lifeboat station next door is now a house, transformed on an episode of Grand Designs!
Head back down the hill and and explore the narrow streets. Tenby has some very impressive 13th century walls, especially along South Parade, adorable souvenir shops and a few blue plaques to look out for - down on the harbourside is a holiday let that Roald Dahl stayed in every Easter as a child, and just up the street opposite the Hope and Anchor pub is East Rock House where Admiral Lord Nelson once stayed.
Run by the National Trust, the 15th Century Tudor Merchant's House is tucked away above the harbour on Quay Hill. Spread across three floors, you can visit the Merchant's shop and see the rooms where he would have lived with his family some 500 years ago, including a kitchen, dining hall and bedroom, all with replica period furniture. NB the Merchant's House is currently only open on Thursdays and Saturdays, and tickets must be booked in advance.
Take a boat to Caldey Island! Like Iona in the Hebrides and Northumberland's Lindesfarne, Caldey Island is one of Britain's holy islands and is still home to Cistercian Monks. The white walled monastery with it's red roof looks Mediterannean, and they have a shop where you can buy perfume, lavender products and chocolate hand made on the island.
Back on dry land, visit Harbwr craft brewery and taproom, tucked away on Sergeant’s Lane, one of the narrow old streets that wind above the harbour. You can book a tour of the brewery, or visit the tap room to try their delicious range of cask and bottled ales. You can also buy bottled ale to take away!
Spend the afternoon on Catle Beach. Nestled beneath the cliffs of Tenby Castle, this little golden beach appears at low tide. Directly opposite is St Catherine's Island with its impressive fort, providing some pretty epic views while you eat your ice cream!