The Taj Mahal is almost perfectly symmetrical, in keeping with Persian and Islamic architectural principles. The minarets (towers), walls, rooms, and even gardens are all symmetrical. The Taj Mahal, one of the world's most perfectly symmetrical structures, is known for its white beauty and sheen. The placement of Shah Jahan's cenotaph — and his grave — are possibly the only elements of the Taj that do not adhere to perfect geometric proportions and symmetrical precision.