2 ms·

None in Ausralia?

• decimalenough 3mo ago
  Nope, unless you count things like this: https://www.kryalcastle.com.au/ https://www.kryalcastle.com.au/ Although there are plenty of old coastal fortifications, which don't appear to count even though things like Fort Siloso in Singapore (a WW2 vintage concrete bunker) apparently do.