EntityQ218599· pop 8· linked from 256 articlestoll castleSign in to savemedieval castle which guarded and controlled a customs postConnectionswatchtowerEntitystar fortEntitykasbahEntitysconceEntitycoastal defence and fortificationEntityStahleck CastleEntityGermanEntityMiddle AgesEntityRhineEntityHoly Roman EmpireEntityInternational Standard Book NumberEntitycanalEntitycastleEntitymountain passEntityfortificationEntityguerrilla warfareEntitycustoms agencyEntityfenceEntityearly modern periodEntitysiegeEntityCategoriesCastles by typeToll castlesToll (fee)Transport buildings and structures