| Digital Fortress" author Brown |
| 'A Mighty Fortress -- God' (hymn) |
| Fortress |
| Steep slope in front of a fortification |
| Roman fortress |
| A Mighty Fortress Is Our God," for one |
| A Mighty Fortress Is Our God," e.g. |
| Ancient Mideast fortress |
| 'A Mighty Fortress -- God' |
| Ancient fortress on the Dead Sea |
| Algerian fortress |
| African fortress |
| Warship fortification |
| Stormers of Saruman's fortress, in "The Lord of the Rings |
| Ancient fortress overlooking the Dead Sea |
| Watery fortification |
| Inner walls of fortification ditches |
| Ancient Israeli fortress |
| Ancient Roman fortress near Padua |
| Medieval fortification |
| Important fortress in the Crusades |
| Builder of the Sacsahuamán fortress |
| Historic hilltop fortress in Israel |
| Off-shore fortress |
| Fortress in San Antonio |
| Palestinian fortresstown |
| Fortress trenches |
| Castle fortification |
| Fortress, for short |
| Moorish fortress in Spain |