Complex sentence: Uch is renowned for its collection of shrines dating from the 12-15th centuries that are dedicated to revered Muslim mystics, and which are considered masterpieces of South Asian Islamic architecture.
Split into simpler sentences: Uch is renowned for its collection of shrines dating from the 12-15th centuries which are dedicated to revered Muslim mystics. Uch's shrines are considered masterpieces of South Asian Islamic architecture.