Cantacuzino Castle is situated in Bușteni, Romania, in the Zamora district, on the street bearing the same name. The building has a great architectural, historical, documentary and artistic value.

Bușteni is a small mountain town in the north of Prahova County, Muntenia, Romania. It is located in the Prahova Valley, at the bottom of the Bucegi Mountains, that have a maximum altitude of 2,505 m (8,219 ft). Its name literally means tree-logs in Romanian. One village, Poiana Țapului, is administratively part of the town, formerly a separate commune prior to 1950. According to the 2021 census, it has 8,368 inhabitants.