 In 1991 , Subspecies became the first American film to be filmed in Bucharest , Romania . Director Ted Nicolaou was initially apprehensive about shooting on location in Romania , but during a four @-@ day location scout he came to love the location thanks to the free rein he had over the ancient ruins and woodland area . Other Transylvanian areas would be used for all Subspecies films , with specific location shootings at Hunedoara , Braşov , and Sinaia . Although , the remnants of communism left in the country , along with cultural differences and the general problems that accompany film productions lent to a difficult experience for the crew while shooting the first Subspecies film . 
