One of the oldest is Preza Castle.

This castle has a history of more than a thousand years and is one of the oldest castles in the world. It's a bit tiring to go uphill, but once you climb up you can see the beautiful scenery in the distance. Looking far into the distance, you can also see Sikutai Lake not far away. I was in Montenegro a few days ago, and there were a lot of wild cats there. In the past two days, I was in 🇦🇱, and there were a lot of dogs here. There is a black and white dog standing guard at the gate. Although it has gone through thousands of years, the remaining ruins here are still worth remembering. There are also double-headed eagle flags planted here. These days, the flags of these countries are double-headed eagles, which shows that after so many years and being ruled by so many countries, they still admire the early ancient Roman Empire the most. After visiting the ruined walls and tiles for half an hour, we rushed to the country’s capital, Tirana.