Favorite thing: This very tall (177 feet) lighthouse built in the early 1920s is active. It is an octagonal unpainted concrete tower with a red lantern and gallery. It is located near the east end of the naval harbor at Kronstadt
The first two photos are of one of the lighthouses that I could identify. Built in 1914, it is an active lighthouse described as a 66 ft octagonal concrete tower with lantern and gallery. The lighthouse is unpainted gray concrete, except the side facing the range is painted black with a white vertical stripe on the range line which is located about 1 mi southwest of the Kronstadt lighthouse. Accessible only by boat. I didn't see the painted range side.
Fondest memory: The other three pictures are of unidentified markers
Favorite thing: When you arrive by cruise ship the Kronshtadt on the Kotlin island is a first sight you will see. You can get there from St. Petersburg by bus (from Staraya Derevnya metro), by car along the dam or by boat.
Favorite thing: The fort was constructed in 1838-45 under the project and administration of engineer-colonel Fan der Veide on an artificial island in Finnish Gulf close to Kronshtadt. It had a task to cover the south water-way to S-Petersburg by cross-fire with forts Peter I, Risbank and Kronshlot together.