Roman sites in Germany?

[Americus]

If you have an interest in the Teutoburg Forest and the Varus disaster of 9 AD, I recommend that you read "The quest for the Lost Roman Legions - Discovering the Varus Battlefield." By Tony Clunn. Maj Clunn was a British Army officer stationed in the area who is credited with discovering the battle site. His book tells the story of his discovery, and adds a fictional account of how the battle may have developed. I think it's a good read.

BTW, I've also really enjoyed Saalburg. I also enjoyed just walking the Limes around that area to eye the terrain.