WBelltrees Peel is a medieval tower situated on a peninsula in Castle Semple Loch in Renfrewshire, Scotland, on which was once an island.
WCaldwell is a mansion and old estate with the remains of a castle nearby. These lands lie close to the Lugton Water and the villages of Uplawmoor in East Renfrewshire and Lugton in East Ayrshire.
WCastle Semple is a former mansion house located in Renfrewshire, Scotland. It is situated near the eastern end of Castle Semple Loch, within Clyde Muirshiel Regional Park.
WErskine Castle was a castle, about 5 miles (8 km) north of Erskine, Renfrewshire, Scotland, south of the River Clyde, on the shore.
WGryffe Castle was a castle existing in 1474, probably about 0.5 miles (0.80 km) north of Bridge of Weir, Renfrewshire, Scotland.
WHawkhead Castle was a castle existing in the 17th century, about 1 mile (1.6 km) east of Paisley, Renfrewshire, Scotland, south of the White Cart River.
WHouston House is an 18th-century mansion, about 1 mile (1.6 km) north and east of Bridge of Weir, Renfrewshire, Scotland, north of the village of Houston.
WInchinnan Castle was a 16th-century castle, about 1 mile (1.6 km) south and east of Erskine, Renfrewshire, Scotland, and about 0.5 miles (0.80 km) north of the village of Inchinnan, south of the shore of the River Clyde, opposite Newshot Island.
WJohnstone Castle is a structure and former mansion in the town of Johnstone in Renfrewshire, Scotland.
WMearns Castle is a 15th-century tower house in Newton Mearns, East Renfrewshire, south of Glasgow, Scotland. It is a Category A listed building. The castle has been restored and is now part of the Maxwell Mearns Castle Church. It also gives its name to nearby Mearns Castle High School.
WPolnoon Castle was a 14th-century fortification located on a motte beside the Polnoon Water in Millhall, in the Parish of Eaglesham, East Renfrewshire, Scotland.
WRenfrew Castle was situated at the royal burgh of Renfrew, Scotland, which is near the confluence of the River Clyde and the River Cart. The original 12th-century castle was built by Walter fitz Alan, Steward of Scotland, upon a river islet known as the King's Inch. This was replaced in the 13th century with a new castle by the road to the Clyde ferry, which became a royal castle under King Robert II. In the 15th century, the King's Inch site was rebuilt as Inch Castle by Sir John Ross. Both castles were demolished in the 18th century and nothing remains above ground at either site.
WStanely Castle is located in the waters of Stanely Reservoir, to the south of Paisley, Scotland, at the foot of the Gleniffer Braes. It was probably built in the early 15th century, on an island within a marsh. The castle is now a ruin. Since 1837 it has been partially submerged by the reservoir, and is completely inaccessible. When the water is drained it can be seen that the castle stands on a narrow promontory, which is connected to the reservoir bank on the southwest.