The only main building that remains from the original palace is the Thewaratsaparom Throne Hall, a beautiful glass and wood confection of a building that was mostly used as a theater, reception hall and for performing merit-making ceremonies.
The theater is basically one big room with French doors running around the exterior. Although rectangular in plan, the roof is two-tiered with the second tier forming a cruciform of barrel vaults intersecting beneath raised dome. The edge of the roof is lined with finely carved fretwork. The columns supporting the roof and interior balcony sport intricately carved pierced bracket supports.
Rama VI was a keen playwright and actor, so the theater was much in use during his reign.