Bath Abbey was founded in the 7th century and became a religious centre; the building was rebuilt in the 12th and 16th centuries. In the 17th century, claims were made for the curative properties of water from the springs, and Bath became popular as a spa town in the Georgian era. Georgian architecture, crafted from Bath stone, includes the Royal Crescent, Circus, Pump Room and Assembly Rooms where Beau Nash presided over the city's social life from 1705 until his death in 1761.