Taj Mahal Main Facade, Agra, India — The white Makrana marble exterior changes color throughout the day, appearing pinkish at dawn, brilliant white at midday, and golden by moonlight. Shah Jahan reportedly said the Taj expressed his grief as a visible sigh, its whiteness reflecting the purity of Mumtaz Mahal.
The J. Paul Getty Museum, Los Angeles, CC0, via Wikimedia Commons
