aerate aeration air bank control current dam England english flow Great Britain management pour river Salix shade stone stream sunlight Sussex tree wall water waterlily weir willow Arun bridge chalk cliff field green landscape meadow natural nature peaceful placid reeds rural summer ancient architecture Buckinghamshire christian church churchyard cross doorway entrance flint Gravestones graveyard historical memorial old pretty religion roof tiles tower windows autumn banks branches deciduous fall footpath mole path quiet shadows shady Surrey tranquil trees beach buildings cloud coastline gravel gulls Hastings holiday leisure pier pleasure resort sea seafront seagulls shingle shore sky town vacation algae Cornish cornwall ocean rock sand sandy seaweed surf tide waves access blue boats calm harbour Ives rail ripples saint St. Ives steps