Citadel, Impenetrable Stronghold
This page is the CodyCross answer for the clue below from Amusement Park, Group 204, Puzzle 5 (Countless Attractions).
Question is: Citadel, Impenetrable Stronghold
and the answer is: FORTRESS
Word Meaning:
FORTRESS — A fortified place; a large and permanent fortification, sometimes including a town; for example a fort, a castle; a stronghold; a place of defense or security.
Definitions from Wiktionary.