It is great to visit a walled city, fortified to protect the area from aggressors. The windows where the cannons are placed at the fort offer incredible views in Dubrovnik, Croatia. The walls are strong and intact. The city has shops and restaurants that are booming with visitors and the option to swim at the end of the pier is fantastic. In California, our border with Mexico already has a fence-from the ocean inland. Who knows, we may become a walled border state, keeping aggressive immigrants out forever. It would be nice if the walls looked like this picture.