The main entryway of a castle is most commonly called the Gatehouse. This was historically the most heavily fortified part of the castle, often featuring a Portcullis (the heavy sliding metal or wood grate) and a Drawbridge over a moat. Larger castles might also have a Barbican, which is a fortified outer gateway or "forward work" designed to trap attackers before they even reach the main gatehouse. Inside the gatehouse passage, you might find "murder holes" in the ceiling for defenders to drop projectiles. In 2026, when visiting ruins or restored castles in Europe, the gatehouse remains the primary architectural focal point, symbolizing the transition from the vulnerable outside world to the protected inner "Ward" or "Bailey."