castle entrance
- drawbridgeHinged castle entrance span
- gatehouseStructure over an entrance
- fortressHeavily defended military structure
- towerTall slender edifice
- archwayCurved overhead passage
keep · ramparts · guards · iron · stone · threshold · barbican · battlements · torches · herald · oak · medieval · stronghold · chains · sentries · cobblestones · walls · siege
access vs. barrier
castle entrancecastle wall
rampart · battlement · fortification · barricade · portcullis
exterior vs. interior destination
castle entrancecastle keep
Fortified main tower
inner sanctum · dungeon · throne room · great hall · hidden vault