I. Introduction
II. Terminology
III. Mainland Europe
A. Structure Type
1. Materials
2. Technique
3. Decoration
4. Defense
IV. Southern & Eastern Britain
A. Structure Type
1. Materials
2. Technique
3. Decoration
4. Defense
V. Western Britain
A. Structure Type
1. Materials
2. Technique
3. Decoration
4. Defense
VI. Northern Britain & Scotland
A. Structure Type
1. Materials
2. Technique
3. Decoration
4. Defense
VII. Ireland
A. Structure Type
1. Materials
2. Technique
3. Decoration
4. Defense