Spain is known for its stunning castles that feature both medieval and Islamic architectural styles. These castles symbolize the country's rich history, and have been visited by millions of people from around the world. Some of the popular synonyms for the phrase "castle Spain" include Alcazar, Parador, Castillo, Palacio, and Fortaleza. Alcazar is often used to describe castle-like strongholds constructed by the Islamic Moors. Parador is a term used for castle hotels in Spain. Castillo is the Spanish term for castle, while Palacio refers to palaces that functioned like castles in the olden times. Finally, Fortaleza is used to describe fortified castles or military structures. Regardless of the term used to describe it, a castle in Spain is a must-visit place for history enthusiasts.