Dymchurch Martello Tower, is a Martello Tower in Dymchurch, Kent England. It stands immediately behind the sea wall.It has been designated by English Heritage as a Grade II listed scheduled monument.The towers were built in the nineteenth century as part of a coastal defence programme. It was placed to protect the gates of marsh sluices with its counterpart Tower no 25 (which is now largely derelict).Tower 23 was restored externally in the early 1970s and is currently a private residence. Tower 24 was then restored using Tower 23 as a guide. In 1969, it became the first Martello tower to be opened to the public and remains as a museum of the Martello Towers, owned by English Heritage.It is currently open between April to October.It has a 24 pounder muzzle-loading cannon on the gun platform.