Earth Hour 2009 is 8:30PM on Saturday 28 March 2009.
A combo picture shows the Royal Palace of Stockholm (Stockholms slott), Sweden, moments before (top) and after the lights were switched off for Earth Hour, March 29, 2008.
The Royal Palace of Stockholm is His Majesty The King's official residence and is also the setting for most of the monarchy's official receptions. The palace is a daily place of work for The King and Queen as well as for the various departments that make up the Royal Court.
The palace is built in baroque style by the architect Nicodemus Tessin and is formed as a Roman palace. The construction started in 1697 and was completed in 1760. Tessin died at an age of 73 in 1728 so he could not see the result of his design. (I know for sure he didn't use CAD) The palace has more than 600 rooms divided between seven floors.
It is the biggest Palace in the word that is still in use by a king. And if you are in Sweden you can take a guided tour through parts of the castle.