Columbia subject headings:
Harvard subject headings:
Cultural geography--Europe--Congresses.
Cultural property--Europe--Congresses.
Heritage tourism--Europe--Congresses.
Historic sites--Europe--Congresses.
Roads--Social aspects--Europe--Congresses.
Romantische Strasse (Germany)--Description and travel--Congresses.
Romantische Strasse (Germany)--Historical geography--Congresses.
Scenic byways--Europe--Congresses.
Princeton subject headings:
Cultural geography--Europe--Congresses.
Cultural property--Europe--Congresses.
Heritage tourism--Europe--Congresses.
Historic sites--Europe--Congresses.
Roads--Social aspects--Europe--Congresses.
Romantische Strasse (Germany)--Description and travel--Congresses.
Romantische Strasse (Germany)--Historical geography--Congresses.
Scenic byways--Europe--Congresses.