Hi Foggie!
Congratulations, your website looks nice and you located some very impressive trees!
In Germany, especially in Baden-Wuerttemberg and Hessen grow a lot of giant sequoias more than 40 m tall. Not all of them have been measured, so we don't have an official height top list. The tree at Bensheim/Fürstenlager was told to be the tallest one in Germany (53m), but as actual measurements showed, the tree is 7-8 meters less. The 55m-trees in Weinheim, Hessen could even be the tallest ones in Europe, but they are not very strong.
The top-trunks (girth at 1.3m, measured in 2007), all located in Baden-Württemberg:
1. Insel Mainau: 9.03 m. This tree is probably the most massive one in Germany, the height: around 50 m.
2. Sachsenheim-Ochsenbach: 8.68 m
3. Calv/Hirsau: 8.42 m
3. Simmersfeld: 8.42 m
There's another giant sequoia located at Überlingen/Bodensee, which girth of 8.46 m has to be checked, I guess...
In Wuppertal/Nordrhein-Westfalen you can find the biggest amount of all 3 sequoia-species here, estimated 2000 trees, half of them are giant sequoias.
Best wishes,
Michael