The Annunziata dei Catalani (Picture 1) was built in the late Norman period in 12th century.  In the 13th century it was modified by shortening the nave and a facade was built. Its apse is  cylindrical and its  high dome is based on a high tambour. The  decoration of the transept and the dome area with its blind arches separated by small columns inspires admiration. This beautiful monuments mirrors the influence of the Arab architecture style.  
Santa Maria degli Alemanni (Picture 2) may date back to the  early 13th century.  At first it was   a chapel of the Teutonic Knights. It was built following the pure gothic style  revelled in the arched windows and  buttresses.
The Sanctuary of Montevergine (Picture 3) houses the incorrupt remains of  Saint Eustochia Smeralda Calafato.