River Yantra and medieval castle Tsaravets Veliko Tarnovo drone flight

river yantra medieval fortress veliko tarnovo castle historic city tsaravets steep hillside old town red roofed buildings aerial drone shot bulgaria ancient fortress ancient architecture panoramic view cultural heritage elevated perspective picturesque hilltop settlement landmark structures medieval charm centuriesold architectural marvel breathtaking panorama terracotta tiles urban landscape preserved history cinematic shot rooftop vantage heritage site vertical cityscape drone photography vertical community hillside living architectural elegance sweeping view captivating aerial red rooftops historic significance elevated vantage cultural landmarks enchanting atmosphere urban history birdseye perspective sloping terrain historic district drones view centuriesold buildings hillside architecture oldworld allure