|Sand castle version of Neuschwanstein Castle in the Algarve, Portugal, by Paulo Juntas|
|Odiham Castle in Hampshire, England, by BabelStone|
|Fasilides Palace in Ethiopia by Bernard Gagnon|
|Toompea Castle in Tallinn, Estonia, by Abrget47j|
The idea of a castle is to make a city, a manor, a kingdom, or a country safe from invaders.
1. The castle is a fortified place where people are property are protected by thick, stone walls, narrow slit windows where archers can rain arrows on people trying to get it. It is often surrounded by water (a moat) and a cleared space where the enemy can't hide in the trees.
Medieval Europe was the birthplace of the iconic castle (high, heavy stone walls; massive wooden doors; parapets and watchtowers), but castles can be found in many parts of the world.
|Elmina slave castle, Ghana, by Dave Ley|
|Keep of Matsumoto Castle, Japan|
|Turku Castle, Finland, by Otto Jula|