Novi Zagreb – istok (Croatian pronunciation: [nôʋiː zǎːgreb ǐstok]; English: New Zagreb – east) is a neighbourhood in Zagreb, Croatia. Within this neighbourhood in the quarter of Travno lies Mamutica, which was built to be the largest communal housing block in southeast Europe. Mamutica towers above other blocks of flats so that the impression is given that it must be on a hill even though the entire area is a flat plain.