December 21st – On this day in 1497, Sheen Palace, where the King, Henry Tudor and his family and retinue had gathered in readiness for Christmas, was destroyed by fire. It was rebuilt in the years up to 1501, and renamed Richmond Palace, of which only the gate-house survives to this day.
An eighteenth-century view of Richmond Palace based on an ancient drawing
The Lost City of London - Before the Great Fire of 1666 
How beautiful that palace myst have been