Lymington Open Air Seawater Baths was built in 1833 and is the oldest lido in the UK. Open daily to swimmers from May to September from 10am to 7pm. info
When the Baths opened the entrance fee was 6d. Using average earnings as a guide, that would be £20 today!
There was also an extra charge for a safety rope. Which meant someone would tie a rope around your waist to prevent you from drowning!