4 ms·

Yep, https://en.wikipedia.org/wiki/Castle_Fortress_of_Almeida https://en.wikipedia.org/wiki/Castle_Fortress_of_Almeida

• InitialLastName 5y ago
  Worth noting that in addition to the ability of defenders to see every part of the wall, star forts have the advantage of making artillery fire more likely to hit the wall at an oblique angle, reducing the odds of a direct hit and (probabilistically) reducing the energy imparted to destroying the wall.
  • jessaustin 5y ago
    There's a trade-off: it takes much more masonry to enclose the same amount of space.