Hall of the Two Sisters (Sala de las Dos Hermanas), Alhambra, Spain — The muqarnas dome above this hall contains 5,416 individual plaster cells arranged in a geometrical pattern of extraordinary complexity. Light filters through 16 windows at the dome's base, creating an ever-shifting pattern of highlights that evokes both a starry sky and a cosmic honeycomb.
© Immasureda, CC BY-SA 3.0, via Wikimedia Commons
