The 16th-century Sponza Palace houses the State Archives , which contain a priceless collection of manuscripts dating back nearly a thousand years. This superb structure is a mixture of Gothic and Renaissance styles beginning with an exquisite Renaissance portico resting on six columns. The 1st floor has late-Gothic windows and the 2nd-floor windows are in a Renaissance style, with an alcove containing a statue of St Vlaho. Also inside is the Memorial Room of the Defenders of Dubrovnik , a heartbreaking collection of portraits of young people who perished between 1991 and 1995.