lush pétrusse valley with spuerkeess tower - luxembourg city

fortification landscape landmark mountain building tourism estate nature plant tower tree hill aerial architecture bank blue bridge city clear environment europe exploration fairytale foliage forest golden hour greenery high angle horizon idyllic lush luxembourg magical outdoors park path peaceful petrusse picturesque relaxing serenity sky skyline spire spuerkeess summer sunlight sunset trail tranquil travel trees urban valley view walking walkway