Villa d'Este
Tivoli, Italy
The Villa d'Este is a 16th-century villa in Tivoli, near Rome. It is a masterpiece of Italian architecture and garden design, famous for its terraced hillside Italian Renaissance garden and the ingenuity of its architectural features (fountains, ornamental basins, ceilings, etc), it is an incomparable example of a 16th-century Italian garden, which later had a huge influence on landscape design in Europe. It is now an Italian state museum, and is listed[1] as a UNESCO World Heritage Site since 2001.
Garden data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).