Category:Fortifications by century

0–9

• 1st-century BC fortifications (4 P)
• 1st-century fortifications (5 P)
• 2nd-century fortifications (1 C, 9 P)
• 3rd-century fortifications (6 P)
• 4th-century fortifications (8 P)
• 5th-century fortifications (6 P)
• 6th-century fortifications (6 P)
• 7th-century fortifications (5 P)
• 8th-century fortifications (15 P)
• 9th-century fortifications (24 P)
• 10th-century fortifications (30 P)
• 11th-century fortifications (1 C, 32 P)
• 12th-century fortifications (2 C, 30 P)
• 13th-century fortifications (3 C, 31 P)
• 14th-century fortifications (2 C, 22 P)
• 15th-century fortifications (3 C, 27 P)
• 16th-century fortifications (4 C, 49 P)
• 17th-century fortifications (6 C, 47 P)
• 18th-century fortifications (5 C, 121 P)
• 19th-century fortifications (11 C, 51 P)
• 20th-century fortifications (8 C, 20 P)
• 21st-century fortifications (5 P)