Architecture
The architectural legacy of the Roman world was the inspiration for many of the structures that were integrated into Renaissance gardens. Open-air theatres, covered walkways and monuments consecrated to nymphs were modelled on ancient Roman precedents, in some cases rivalling the originals on which they were based. With their allusions to the classical world, they tested the knowledge of visitors, as well as providing somewhere to stage events or escape the heat of the sun. Much of the architecture in gardens was both decorative and structural. Terraces needed the support of vast retaining walls, often embellished with niches and sculpture and topped with elaborate balustrades, while monumental staircases were required to link the levels of gardens.