The Ducal Palace is in the oldest part of the village. It was built in the 15^th century according to the will of the Del Balzos. The façade is in Renaissance style and on a window man can still see a star with 16 pint, their family coat of arms. The Legari Palace was built in 1536 according to the will of Donato Legari, a rich merchant. It is in good condition and belongs to the local administration. The Sangiovanni Palace is an imposing and elegant building of the 15^th century, its façade is very interesting. The Mother church is dedicated to the Redeemer and was built from 1763 to 1845 on a pre-existing structure of the 14^th century. The façade was designed by the Arch. Benedetto Torsello while the whole building was designed by Felice De Palma according to the will of the Bishop Latomo Massa. The Church has a nave and two aisles with ten altars. The new high altar was built in 1965 by Marcello Alemanno. The font by Giacomo Loparco dates to the same year, the wooden pulpit by Giuseppe De Cupertinis was built in1879 while the choir dates to 1855. the paintings on the altars are also very interesting such as the painting with the Archangel Raphael by Paolo Finoglio. The Convent of the Capuchin Fathers and the close church date to the 17^th century and were consecrated in 1656 by the Bishop Granafei. On the high altar there is a 17^th century painting by Brother Angelo representing the Forgiveness of Assisi. The 18^th century wooden altar is itself very interesting. The paintings of St Anna, St Joseph and the prophet Isaiah were made by Aniello Letizia. The Church of St Anthony is close to the Convent of the Franciscan Friars and is certainly the oldest religious building of the village and the legend says it was built by St Francis of Assisi himself. It is an aisleless church with baroque altars and interesting paintings such as the ‘Annunciation’. The Church of Our Lady of the Assumption was built in the 18^th century. On the High Altar there is a sculpture of the blessed Souls, two paintings one of which represents St Carlo Borromeo and scenes of his life. The Chapel of St Joseph dates to the 18^th century. it is an aisleless church with a small organ, a statue of St Michael Archangel, one altar and three paintings. The Chapel of the Crucifix is outside the urban area, its only altar is in baroque style was made by Placido Buffelli in 1670. Close to this church there was an old fair where people could buy farm tools and cattle. The Chapel of the Holy Spirit was built in 1977. The patron  saint of Alessano is St Trifone and the population celebrates him on November 10^th.

The nickname of the people of Alessano is "sciudei" (Jews) which means that they betray their neighbours very easily but, actually, in the past there was a group of Jews in Alessano. They were very rich and the king Charles V sent them away from the kingdom in 1539. The king Philip II allowed them to come back in 1572 but they were exiled again in 1749 and left to the village this nickname.