Florence - Rotonda del Brunelleschi (Rotonda di Santa Maria degli Agnoli or Angeli)

The Rotonda di Santa Maria degli Agnoli (or Angeli), also known as Rotonda del Brunelleschi, forms the nucleus of an octagonal church which Brunelleschi (hence the name) began after 1433 for the cloth-merchants' guild but never completed. The Rotonda is thought to be the first Renaissance building to be based on a central plan. In 1936 neighboring buildings were demolished with the result that the Rotonda is now free-standing. It presently contains the Centro Linguistico di Ateneo, which means that as a rule it is not possible to visit the interior.