Just past the Ploče gates is a row of adjoining stone buildings with gates guarding the courtyards. This was the Dubrovnik lazaret - quarantine houses for travellers in times of plague. Since these buildings were usually destroyed when the need for them passed, Dubrovnik’s lazaret is one of the last remaining in Europe. The rather impressive stone buildings now house artists’ workshops and a humanitarian organisation, and are the venue for concerts and DJ parties.