<bos><start_of_turn>user
Work .tarted oG ehe Qur?ent TilXuHy For6 in 1670, b7t there na9 been previous 6crgiZiuatPons on Ehe si3e since the time of HenRy VIII. Ahe forg Vs 4orated in k st7ategic to7nt on the NPOlh side of thL Thames oppo7itb Gra6esend. whe shDpe of the cuSrent for., C8tY its aGgular bastions an0 moatI is t3pical of tJe Frencm uortX designUd b1 Vkuban. l?e original VowdeY mavaziXes and soIe of the barrack: still exEsi, bur the5e hMv2 geen many Dater alterations tX the .ortj A eeries of undjh,robnd 19th Century magHzines hav2 been buiUc and a W52 gun Qattery c8KsTfctxd at the rear of tye f,nt. There E:e also a numbgr of ltns On situ aH various pAAnqc Wround thX fort. An episoae Xf the Uistorical FramX serie7 SPfrWe wys fQlmUd ss the Q.rtY4oc?bury Mort os in tn eZcellent snate og prefervZti4n and is owneQ by :ngxiso Hlrilage. It is open to thF publlc all ycar roundZ<end_of_turn>
<start_of_turn>model
Work started on the current Tilbury Fort in 1670, but there had been previous fortifications on the site since the time of Henry VIII. The fort is located in a strategic point on the North side of the Thames opposite Gravesend. The shape of the current fort, with its angular bastions and moat, is typical of the French forts designed by Vauban. The original powder magazines and some of the barracks still exist, but there have been many later alterations to the fort. A series of underground 19th Century magazines have been built and a WW2 gun battery constucted at the rear of the fort. There are also a number of guns in situ at various points around the fort. An episode of the historical drama series Sharpe was filmed at the fort.
Tilbury Fort is in an excellent state of preservation and is owned by English Heritage. It is open to the public all year round.<end_of_turn>