A popular seaside town is home to the "best" and largest indoor water park in the UK, with 18 slides and attractions. Sandcastle Waterpark is on BlackpoolPromenade and inside sits at a permanent temperature of a "tropical" 28C.

The waterparkis home to slides such as the world's longest indoor roller-coaster water slide, the Master-Blaster, and the world's first vertical indoor drop slide, the Sidewinder. These are two of five "white-knuckle" rides. Eight of the rides are suitable for children as young as two. Inside the park, there is a cafeand kitchen for guests to enjoy, serving popular favourites such as burgers, pizzas, cakes, and sweet treats.

There is also a private VIP tiki cabana experience and an adults-only spa with a sauna, steam room, heated loungers, foot spas, aromatherapy and salt inhalation room.

Last summer, Sandcastle Waterpark was named one of the top nine waterparks in the UK by Blooloop, a site that covers the attractions industry. And on TripAdvisor, it comes up as the best ranked waterpark in the whole country.

One reviewer said: "The park itself was amazingly designed, with great decoration, and it seemed that lots of time had been taken in creating it, and upholding the standard that it was at.

"All slides seemed extremely safe and were very fun, with there being a wide range for all ages and preferences. The cleanliness of the park was outstanding."

Another visitor said on Tripadvisor: "We visit here every time we visit Blackpool. The staff are lovely and always very polite and welcoming."

Day-of tickets are £26.95 for those aged eight and over and £17.95 for children under eight with under threes free. This is a three-hour session with all slides available, though height and weight restrictions apply.