The Sacro Bosco, colloquially called Park of the Monsters, also named Garden of Bomarzo, is a Mannerist monumental complex located in Bomarzo, in the province of Viterbo, in northern Lazio, Italy. The garden was created during the 16th century. The design is attributed to Pirro Ligorio, and the sculptures to Simone Moschino. Situated in a wooded valley bottom beneath the castle of Orsini, it is populated by grotesque sculptures and small buildings located among the natural vegetation.