Taj Mahal is regarded as one of the eight wonders of the world, and some Western historians have noted that its architectural beauty has never been surpassed. The Taj is the most beautiful monument built by the Mughals, the Muslim rulers of India. Taj Mahal is built entirely of white marbles. Its stunning architectural beauty is beyond adequate description, particularly at dawn and sunset. The Taj seems to glow in the Right of the full moon. On a foggy morning, the visitors experience the Taj as if suspended when viewed from across the Yamuna River.