via Bangkok Post, 12 June 2018: Wang Na, or the Front Palace, is more commonly known as the National Museum in Bangkok.
While the Grand Palace is world famous for its palatial architecture, the old Front Palace, or Wang Na, of ancient viceroys is hidden in obscurity although its beauty is second to none. Today it is just known simply as the National Museum Bangkok, rather than a palace with deep historical and artistic significance.
Source: Bringing back the forgotten palace
