📜 Mid-19th-century gun tower, decommissioned in 1956. 🔍 Located where the Medway and Thames rivers merge, built to defend against French naval attacks. # Why Go 🏰 Explore a historic military structure. 🌊 Unique location in river waters. 📸 Great for photography of abandoned architecture. 🚶 Accessible via causeway at low tide (with care). # Why Avoid ⚠️ Tower access requires scrambling over rocks and river mud. 🚧 Structure is abandoned and looks unstable. 🚫 Isolated, no facilities. 🚫 Its future remains uncertain, currently unused. # Tips 🅿️ Car park at end of High Street in Grain village (height restriction). ♿ Path to tower viewpoint is wheelchair accessible.