Similar to 甕城
0
01
12
23
3▲1 trends4
45
56
67
78
89
910
1011
11 (number)12
12 (number)13
13 (number)19
19 (number)40
40 (number)70
70 (number)100
100400
400 (number)700
700 (number)1000
1000 (number)1000000
1,000,000落とし格子
Portcullis城門
City gate櫓門
石落とし
Bretècheカーテンウォール (要塞)
Curtain wall (fortification)キープ (城)
Keep