Walpole Tidal Pool was built in 1937 and just a short swim from Cliftonville (nr Margate, Kent). It's the largest of its kind in the UK and used throughout the year, even winter. This freestanding staircase is just opposite the pool and this incarnation, with its Escher visual nod is a replacement to the rickety original wooden stairs that allows locals and holiday makers to reach the pool from the cliffs above. Walpole Tidal Pool was built in 1937 and just a short swim from Cliftonville (nr Margate, Kent). It's the largest of its kind in the UK and used throughout the year, even winter. This freestanding staircase is just opposite the pool and this incarnation, with its Escher visual nod is a replacement to the rickety original wooden stairs that allows locals and holiday makers to reach the pool from the cliffs above.