tsarevets fortress in veliko tarnovo, bulgaria, southeastern europe

age ancient architecture balkan balkans beautiful blue building bulgaria bulgarian capital captivating carevec castle city destination europe fortress gate greenery hill historic historical history landscape middle mount mountain nature old outside panorama path protect rock rocky southeastern stone stony tarnovo tcarevetc tourism tower town travel tsarevets turnovo tzarevetz veliko view visit wall way zarevets zarevetz zarevez