The park was largely abandoned and overgrown for centuries until being restored by the Bettini family in the mid-20th century.
The giant mouth, known as the 'Orcus,' is inscribed with the words 'Lasciate ogni pensiero, voi ch'entrate' (Abandon every thought, you who enter), a play on Dante's Inferno.
Salvador Dalí filmed a short movie at the park and found the site a significant inspiration for his surrealist work.
Many of the sculptures feature mysterious inscriptions that have defied definitive interpretation by art historians for centuries.
The 'Leaning House' was built to intentionally challenge the visitor's sense of gravity, causing physical vertigo when standing inside.
Pirro Ligorio, the park's primary architect, was the same man tasked with completing St. Peter's Basilica after Michelangelo's death.
The garden contains no central fountain or traditional geometric hedge patterns, directly defying the garden design principles of the Italian Renaissance.
The rock sculptures are not built structures but monolithic carvings pulled from the native peperino bedrock of the area.
Sacro Bosco, also known as the Park of the Monsters, is a 16th-century Mannerist monumental complex located in the woods of Bomarzo. Created by Prince Vicino Orsini and architect Pirro Ligorio, the garden features massive, grotesque stone sculptures carved directly into volcanic rock boulders. Unlike traditional Renaissance gardens that emphasize symmetry and order, this site utilizes irregular landscapes and distorted perspective to unsettle the viewer. Key sculptures include a giant mouth that serves as a stone room, a fighting giant, and a leaning house designed to cause sensory disorientation. The layout reflects a cryptic, literary-inspired path rather than a standard botanical display. As of June 2026, the park remains open to the public as a protected historical site. The sculptures are distributed across a hilly, forested area with varying terrain elevation.
The interior of the Orcus (Giant Mouth) provides a unique frame for photos looking out toward the green garden.
Wear hiking-capable footwear as the park features uneven, unpaved woodland paths with significant inclines.
Bring mosquito repellent, as the dense, humid forest environment is heavily prone to insect activity.
Pick up the physical map at the entrance to navigate the non-linear path, as it is easy to miss hidden sculptures in the dense brush.
Do not expect a manicured botanical park; the terrain is rugged, steep, and intentionally wild.
Open daily throughout the year, including public holidays.
Do not climb on the stone sculptures, as they are fragile historical artifacts; remain on marked gravel or dirt trails.
