Други полезни връзки

https://www.sofia.bg/web/tourism-in-sofia/urvich-fortress

https://youtu.be/kgLyhhIb-fchttps://www.youtube.com/watch?v=4Iph2WNjSPQ&t=34shttps://youtu.be/tOOiCpiPKT0https://youtu.be/sMbczggtOEchttps://youtu.be/7eurAlKZ0k0