Original: Aside from the apse of the church , other landmarks of the square include : The Palace of the Lay Fraternity ( Fraternita dei Laici ) : 14th-15th century palazzo , with a Gothic ground floor and a quattrocento second floor by Bernardo Rossellino .
Simplified: The Palace of the Lay Fraternity ( Fraternita dei Laici ) : 14th-15th century palazzo , with a Gothic style .