Windsor Castle is Europe's longest-occupied palace, located in Berkshire, England. It was first built by William the Conqueror in 1066 and has been the site where several English monarchs were buried, including Henry VI, Edward IV, and Henry VIII. Audley's Castle is a 15th century tower castle located in Northern Ireland that includes a castle tower and bawn. Edzell Castle was originally built in the early 16th century as a motte-and-bailey castle in Angus, Scotland to guard the mouth of the Glenesk valley, and additional ranges were added through the late 16th century.

1. Castles of the United Kingdom 15th-16th century By: Andrew Scott

3. Located in the English county of Berkshire.

4. Built on more than 13 acres.

5. Built of bagshotheath stone.

6. First built in 1066 by William the Conqueror.

8. Edward IV died 1483.

10. Three story tower.

11. Built in the 15th century.

12. Located in Northern Ireland.

14. Built in Angus, Scotland.

15. The original tower was a motte and bailey design castle.

16. Originally built to guard the mouth of the Glenesk.

17. In 1553 a west range was added.

18. In late 16th century the north range was built.

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23. Wikipedia. (n.d.). Retrieved February 1, 2011, from http://en.wikipedia.org/wiki/File:Coat_of_arms_of_the_United_Kingdom.svg

24. Wikipedia. (n.d.). Retrieved February 1, 2011, from http://en.wikipedia.org/wiki/Dunnottar_Castle

25. Wikipedia. (n.d.). Retrieved February 1, 2011, from http://en.wikipedia.org/wiki/Edzell_Castle

26. Wikipedia. (n.d.). Retrieved February 1, 2011, from http://en.wikipedia.org/wiki/Audley%27s_Castle

27. Planetware, (n.d.). Retrieved February 1, 2011, from http://www.planetware.com/map/windsor-castle-map-eng-windcast.htm