Belvedere and Citadel

Belvedere noun - A freestanding airy structure in a scenic setting (as a park) typically offering commanding views.

Citadel and belvedere are semantically related. in guard topic. In some cases you can use "Citadel" instead a noun "Belvedere".

Citadel noun - A structure or place from which one can resist attack.

Belvedere and citadel are semantically related. Sometimes you can use "Belvedere" instead a noun "Citadel".