These are the ruins of World War II fortifications near what is now the Ķegums hydroelectric power plant. One blockhouse was found on the left bank of the Daugava River, approximately one kilometre to the South-Southeast from the plant’s dam. A second is also on the left bank of the river, opposite the Rēzijas campground. It has slid down the abraded shore of the reservoir and is partly underwater. It is mostly accessible by boat.

The current Ventspils airport began its life as a military object. Today regular passenger flights to and from Rīga have been suspended, and the airport is only used for small planes.

This is the only Soviet military object of its type and scope in Latvia – a long-distance communications base which was supposedly used to maintain contacts with Soviet naval ships and submarines all around the world. The facility had a central tower and six perimeter towers, each more than 200 metres high. Some of the towers remain in place and are used for mobile communications. It is rumoured that the Soviet communications system was never once turned on. The complex at Upīškalns can be seen by driving down the Skrunda-Kuldīga road. It is some 3 km before the Kuldīga ring road, at a populated location called Raidstacija.