It was built in the mid-19th century by architect Stamatios Kleanthis. It is simple, rectangular, with symmetrical entrances and windows according to the neo-classical style.

A 19th century neo-classical building that housed the first High school of Greece in 1833. It was renovated in 1992 and since then it houses the City Hall.

It is the oldest mosque in the city, probably from the end of the 16th century.
In the years of the 2nd Venetian Occupation it was converted into a catholic church. From 1828 until 1833 it housed a school and later it was used as a theatre and a cinema called "Trianon". Today it houses the Municipal Theatre of Nafplio.

Built in 1714, it has 8 independent bastions which are preserved in excellent condition. Later it housed a horrible prison. Access is possible by stairs or by a modern road. The view from the top of the hill is breathtaking.

It was founded in 1951 and holds 70,000 volumes, the oldest dating from 1504. A lending library and a reading room are available.