historical agra fort, agra, uttar pradesh, india

agra fort uttar pradesh india historical red mughal emperor humayun crowned renovated akbar heritage red-fort agra-fort pradesh fort india historic unesco world site architecture sandstone fortification ancient monumental arches gates courtyards palaces battlements military history royal residence intricate carvings indo-islamic cultural heritage landmark majestic grand defensive structure turrets ramparts historic indian tourism scenic views architectural marvel era bastions ancient fortress citadel iconic exploration archaeological travel destination regal beauty monument panoramic significance india