Below are pictures from Predjama castle, Slovenia. Predjama castle is a structure built into a 400 foot (123 m) cliff. The castle dates to the 16th century and has a fascinating history.
Pictures were taken by Rhett A. Butler, copyright 2008. While these photos are the property of mongabay.com, it may be permissible to use them for non-commercial purposes (like powerpoint presentations and school projects), provided that the images are not altered in any form. Please read this for more details. If you are interested in using an image in a publication please contact me.