This is Charlottenburg Palace, built for the Hohenzollerns in the 17th-18th centuries. It's within the city of Berlin, though when it was built it was in a village outside...
Some of the interiors really push the boundaries of good taste...
The chapel.
♫ Grand to be alive, to be Kaiser ♫
(to the tune of "I didn't know what time it was")
"Belvedere" teahouse
This is the section that is an "English-style" garden (i.e. landscaped and not geometrically laid-out)
Mausoleum. King Friedrich Wilhelm III and Luise. Below is Kaiser Wilhelm I.