Porta Siberia is a massive gate, dating back to 1551-53. It was the work of Galeazzo Alessi and once formed part of the 16th-century walls. Its name derives from 'cibaria' (foodstuffs), for it was through this gate that the city's produce passed, both on arrival from the sea and departure towards other ports in the Mediterranean.Once used as a customs area, after the Old Port was restructured it was turned into a museum devoted to the painter and set designer Emanuele Luzzati, housing temporary exhibitions by the Genoese artist and by leading contemporary illustrators.
References:Considered to be one of the most imposing Roman ruins, Diocletian’s palace is certainly the main attraction of the city of Split. The ruins of palace, built between the late 3rd and the early 4th centuries A.D., can be found throughout the city. Today the remains of the palace are part of the historic core of Split, which in 1979 was listed by UNESCO as a World Heritage Site.
While it is referred to as a 'palace' because of its intended use as the retirement residence of Diocletian, the term can be misleading as the structure is massive and more resembles a large fortress: about half of it was for Diocletian's personal use, and the rest housed the military garrison.
Architecture
The palace has a form of an irregular rectangle with numerous towers on the western, northern, and eastern facades.