The Castle of Antimachia in Kos: On a small hill above Antimachia village, to the south of Kos Town, there is a Venetian Castle that is know as the Castle of Antimachia. 
Its construction started in the 14th century by the Order of the Knights of Saint John but works were intensified in the end of the 15th century, as it can be seen at an inscription above the main gate which has the date 1494 engraved on it. This is about the same period of the construction of Nerantzia Castle in Kos Town. 

The external fortifications of the Castle stand strong till today, although so many centuries have passed and they have suffered numerous attacks. 
The only entrance to the Castle is found on its northern side and it is protected by double gates. 
Above the entrance, there is the symbol of the Kn ights engraved in marble.

Inside the Castle, there are not many things to see apart from two Venetian churches, the church of Agios Nikolaos dating from the 16th century and the church of Agia Paraskevi, built in early 18th century. 
Some remains of cisterns and houses also survive but there are not in very good state, as you can see only their foundations. 
From the Castle, you can have nice views of the surrounding area and the sea.