DANUBIANA European Network for Danubian Studies and Cultural Actions
The Danubian regions of Germany, Czech Republic, Austria, Swizerland, Italy, Slovenia, Hungary, Slovakia, Croatia, Bosnia and Herzegovina, Serbia and Montenegro, Albania, Bulgaria, Romania, Moldova, Ucraine.
Tourism on the Danube
http://www.vacationstogo.com/region_riveri.cfm
The Danubian provinces of the Roman Empire (A.D. 200)
http://www.aquela.com/roleplaying/SPQR/world/Danube.html
Environmental Programme for the Danube River Basin (EPDRB) - Danube PCU: Monitoring Centres
http://www.rec.org/DanubePCU/maps/dbm.html