walled

Refers to a city historically surrounded by walls for protection.

Refers to a garden enclosed by high walls, also used metaphorically for a closed ecosystem.

壁に囲まれた敷地

Refers to an area of land with buildings, enclosed by a wall.

建物があり、壁で囲まれた土地の領域を指します。

Refers to a castle enclosed by a wall for defense.

Refers to an open space surrounded by walls or buildings.