The longboat will be upgradeable with galleys in the next release.
A user in the german forum (Thorgal) found the reason of the missing entry of hanging gardens in your building list. The city must be placed next to a river. (I let this xml-tag (bRiver) untouched from the original CIV)
A user in the german forum (Thorgal) found the reason of the missing entry of hanging gardens in your building list. The city must be placed next to a river. (I let this xml-tag (bRiver) untouched from the original CIV)