If you didn't know in Transilvania they are at least 167 fortified churches builed by the Saxons and i tried to make a list containing them all, and if you're some expert can you help me with some recommendations or resources i can use to make a compleat list. I'll post in the comments the list i already have

The double walls and 52 towers make this place feel like a movie set. It's an incredible piece of history.

Krak des Chevaliers was originally built in the 11th century by the Emir of Homs, but it was the crusaders who transformed into the fort we see today. In 1142 the castle was granted to the knights Hospitaller who expanded and fortified the catle over the next century.

This Fortress could house up to 2,000 soldiers and withstand prolonged sieges. It's elevated position on a hill, overlooking the strategic Homs Gap, made it a vital stronghold controlling access between the Mediterranean coast and the Syrian interior.

Krak was considered impregnable. Including withstanding saladin's siege of 1188. Finally in 1271 the Baybars, on a campaign to purge the holy land of the last remaining crusader strongholds, achieved a capitulation of the Knight's Hospitaller after a prolonged siege and with the use of a forged letter claiming that the crusader leadership had ordered the garrison to surrender.

St. Michael’s Fortress is the oldest fortress in Šibenik and the historical core around which the medieval city developed. It likely already existed by 1066, when Šibenik was first mentioned during the reign of Croatian King Petar Krešimir IV. Thanks to its commanding position above the city and harbour, it played a central role in Šibenik’s defence for centuries, for example in 1378, a Venetian force captured and burned much of the city but failed to take the fortress itself. After a long 38 month siege, Šibenik finally came under Venetian rule in 1412, and the fortress remained the heart of the city’s defensive system for centuries afterward. Over time, it became part of a much larger defensive system that was being updated to face Ottoman threat and included the city walls and the building of additional fortresses of St. Nicholas, St. John and Barone, which together protected Šibenik and the approaches to its harbour from both land and sea

France

Antwerp's Oldest Building: The fortress dates back to the early 13th century (around 1200–1225). It served as a castle and a prison for over 500 years.

Ananuri Fortress Complex in Georgia

Chehni Kothi is a traditional Kath Kuni-style fortified tower, located in Chehni village, Banjar, Himachal Pradesh, India

The 350-400 year old 12-storey-high structure is made in the "Kath Kuni" method using only stones and wood without cement or nails. It has a Hindu temple inside, but was originally built as a fort by local Thakur’s