Castles
Castles stamps open a window onto centuries of fortified architecture, from medieval strongholds with moats, keeps, and curtain walls to romantic palaces such as Neuschwanstein in Bavaria and Japan's celebrated Himeji Castle. These structures served as defensive residences and symbols of power, and today many rank among the world's most visited heritage sites. As a stamp-collecting theme, castles pair naturally with architecture, history, and world heritage subjects, giving topical collectors striking imagery and a theme that spans many countries and eras.