Moat and walls of Imperial Palace, Tokyo, Honshu, Japan, Asia

Part of the Imperial Palace, Tokyo, Japan, Asia

Imperial city walls with storks, Fez, Morocco, North Africa, Africa

Hue Citadel Gates, The Imperial City, Hue, UNESCO World Heritage Site, Vietnam, Indochina, Southeast Asia, Asia

Hue Citadel Gates, The Imperial City, Hue, UNESCO World Heritage Site, Vietnam, Indochina, Southeast Asia, Asia

View of Ote-bori Moat, The East Gardens of the Imperial Palace, on a sunny day, Chiyoda, Tokyo, Honshu, Japan

Imperial Palace walls, Kyoto city, Honshu, Japan, Asia

Nijo castle,UNESCO World Heritage Site,Kyoto, Japan.

Bastions of the Imperial Castle, Nuremberg, Middle Franconia, Bavaria, Germany

Imperial City of Hue; Hue, Thua Thien-Hue, Vietnam

Imperial City; Hue, Thua Thien-Hue Province, Vietnam

Imperial City; Hue, Thua Thien-Hue Province, Vietnam

Ruins of Imperial Palace in Gelnhausen, Hesse, Germany