An Arab city of the early medieval period. Urban centers in the Middle East were of a size and wealth all but unknown in the Christian west during this period, encouraging the development of a large ...

Although the Penrose-patterned tiles date to the 14th and 15th centuries, the same shapes of tiles "were used all over the medieval Islamic world to generate all sorts of patterns" for hundreds of ...

Intricate decorative tilework found in medieval architecture across the Islamic world appears to exhibit advanced decagonal quasicrystal geometry -- a concept discovered by Western mathematicians and ...

Ceramic vessels originating in the Islamic world once adorned the facades of churches and other Christian monuments, while Christian symbols such as the cross embellished columns, slabs, and other ...

A 13th-century fresco rediscovered in Ferrara, Italy, provides unique evidence of medieval churches using Islamic tents to conceal their high altars. The 700-year-old fresco is thought to be the only ...

Yakutiye Madrasa, Erzurum. Central muqarnas, Islamic ornamental three-dimensional architectural decoration, embellishing a church ceiling, 1310. Credit: Richard Piran McClary Coptic capital with ...