DnD 5e Homebrew — Fortresses, Strongholds and Temples for Players

Military Architecture of Ancient Egypt

Fortresses, Temples, and Strongholds — Crit Academy

Forts in South India - Nomadic Shoes

Koridai at War Wiki - ♛ Strongholds and Fortress Building.

The ancient rock fortress of Yapahuwa is similar to, but smaller than, Sigiriya. Dating from the 13th century, it was the capital and main stronghold of King Bhuvanekabahu I (1272 - 1284)

Chitradurga Fort – Chitradurga, India - Atlas Obscura

The ancient rock fortress of Yapahuwa is similar to, but smaller than, Sigiriya. Dating from the 13th century, it was the capital and main stronghold of King Bhuvanekabahu I (1272 - 1284)

The ancient rock fortress of Yapahuwa is similar to, but smaller than, Sigiriya. Dating from the 13th century, it was the capital and main stronghold of King Bhuvanekabahu I (1272 - 1284)

Antonia: The Fortress Jerusalem Forgot – Popular Archeology

Under the Mountain: Durazh-Barak, Impenetrable D&D Dwarven Fortress