Watergate (architecture)

A watergate (or water gate) is a fortified gate, leading directly from a castle or town wall directly on to a quay, river side or harbour. In medieval times it enabled people and supplies to reach the castle or fortification directly from the water, and equally allowed those within the castle direct access to water transport.[1]

A 19th-century image of the long-demolished Water Gate at Bristol Castle, England

Newport Castle in Wales, showing a 14th-century watergate directly beneath the central tower, allowing access to and from the tidal River Usk