document.write("<table><tr><td><p>A small vaulted pentagonal tower that was used by Vauban in his later designs in place of the bastion, but usually protected by a detached bastion. Early tower-bastions were used on riverbank defences at Bouillon and Besançon.</p></td></tr><tr><td><img src=http://www.fortified-places.com/glossary/images/towerbastion.jpg></td></tr></table>");