Image Credits

All external Images are taken from Wikimedia under the creative commons license
Front page header: By ETH-Bibliothek (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons.
Moraine Lake on about page: By Gorgo (Photo taken by author) [Public domain], via Wikimedia Commons.
Antwerp on about page: By Ad Meskens (Own work) [Attribution, CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons.
Klosterneuburg on about page: By Bwag (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons.