The classic Bavarian castle Neuschwanstein, under a live sky with clouds, moon, sun, birds etc. Optional flowers and leaves in the foreground.

Based on the beautiful photo of Neuschwanstein Castle by Jeff Wilcox:

http://www.flickr.com/photos/jeffwilcox/95494439/

Other contributors (flickr users):

Leaves: Georgia Reading
Bluebell: Mark Fosh
Dandelion Flower: Amanda Slater
Moon: Luis Argerich

Thanks everyone for the creative commons licenses!