Just for the record, one of the keywords for researching inclusive travel in German is "Barrierefreier Tourismus."
Here's one example of what you will find:
English:
Topic of the Month April: Barrier Free Tourism
http://www2.rehacare.de/cipp/md_rehacare/custom/pub/content,lang,2/oid,7899/ticket,g_u_e_s_t
German:
Thema des Monats April: Barrierefreier Tourismus
http://www2.rehacare.de/cipp/md_rehacare/custom/pub/content,lang,1/oid,7899/ticket,g_u_e_s_t