Majestic ancient castle on a hill with clear blue sky, showcasing historical architecture and heritage, Northumberland, England, United Kingdom, Europe

castle alnwick castle northumberland england historic fortress architecture stonework towers windows sunny day sky blue green greenery lush sunlight history heritage landmark tourism travel medieval fortification historical attraction vacation sightseeing famous iconic royal british culture structure building travel destination vacation spot english european monument ancient landscape scenery scenic nature beautiful majestic impressive stunning