The Second Tower or Cesta stands on the highest point of Mount Titano, 755 meters above sea level. It is situated halfway along a panoramic path from which an impressive and breathtaking landscape can be admired and which, on top of the mountain, connects the three ancient towers of San Marino. 

The original stronghold, as evidenced by the Latin etymology of the term Cesta, served as an observation post already in the Roman period and this Tower is mentioned, with the same name, in a document of 1253.

In 1320, a high outer wall was erected and the Tower connected to the fortifications of the second circle of walls. The Cesta maintained its functions up until the end of the 16th century. 

The door giving access to the inner part of the fortalice was opened during the 16th century and the door jamb features the coat of arms of the Republic and the date 1596, year of its restructuring. 

Although restored many times over the years, the donjon, with its pentagonal base, still preserves the characteristics of the medieval towers with embrasures and loopholes.  

No longer in use since the 17th century, the fortalice underwent a significant and radical restructuring in 1924-25, which halted its degradation and restored the original aspect.

In 1956 the Tower became the seat of the Museum of Ancient Arms, where 700 exhibits of all types of ancient armours and weapons are now displayed.