Much of Indian architecture, including the Taj Mahal, other works of Mughal architecture, and South Indian architecture, blends ancient local traditions with imported styles.[264] Vernacular architecture is also highly regional in it flavours. Vastu shastra, literally "science of construction" or "architecture" and ascribed to Mamuni Mayan,[265] explores how the laws of nature affect human dwellings;[266] it employs precise geometry and directional alignments to reflect perceived cosmic constructs.[267] As applied in Hindu temple architecture, it is influenced by the Shilpa Shastras, a series of foundational texts whose basic mythological form is the Vastu-Purusha mandala, a square that embodied the "absolute".[268] The Taj Mahal, built in Agra between 1631 and 1648 by orders of Emperor Shah Jahan in memory of his wife, has been described in the UNESCO World Heritage List as "the jewel of Muslim art in India and one of the universally admired masterpieces of the world's heritage."[269] Indo-Saracenic Revival architecture, developed by the British in the late 19th century, drew on Indo-Islamic architecture.[270]