The first floor is the most important. Upon entering, the visitor passes into the Front Audience Hall and from there straight on to the Central Throne Hall, or turning left to the Eastern Gallery o right to the Western Gallery, which in turn open onto reception halls used during royal banquets. In addition, the Eastern Gallery serves as a reception hall for ambassadors before they present their credentials to the king. The reception areas are decorated with portraits of the Chakri kings and queens, various carved thrones and bronze busts of members of European royal houses.