|Introduced In||The Conquerors|
|Armor Classes|| Building|
|Line of Sight||2|
Sea Walls are rarely seen in campaign scenarios. In Walls of Constantinople and Fall of Rome, they appear together with Sea Gates. They are found to the north and south of Constantinople, in the harbor, and defend the city from seafaring vessels.
- In the beta version, Sea Walls and Sea Towers were built by a "Builder Ship", which could also build Docks, Sea Gates, Sea Towers, and repair ships.
|The Age of Kings|
|Cathedral · City Wall · Dome of the Rock · Fortress · Great Pyramid · Mosque · Pavilion · Pyramid · The Accursed Tower · The Tower of Flies · Trade Workshop · Yurt|
|Monument · Sea Gate · Sea Tower · Sea Wall|
|Amphitheatre · Aqueduct · Arch of Constantine · Colosseum · Fire Tower · Fortified Palisade Wall · Gol Gumbaz · Poenari Castle · Quimper Cathedral · Temple of Heaven|
|The African Kingdoms|
|Barricade · Fence · Granary · Hut · Palace · Sea Fortification · Storage · Tent|
|Rise of the Rajas|
|Army Tent · Sanchi Stupa|