I want to create a folder structure: Travels → France/Germany/etc → Photos.
So, now I'm confusing, how to name this folder correctly in English — «Travel» or «Travels». Should I add «s» in order to show plural form in case of word «travel»?
I agree with Phoenixheart6 - either term is suitable BUT Travels is superior.
BUT, while you can use either term, the meaning is somewhat different in each case
To achieve travels you travel.
Travel is effectively movement or journeying.
A folder headed "Travel" would imply an emphasis on the actual journeying. while it would be understood if the contents included all the other related activities there is a subtle but definite emphasis on the journeying aspect.
Whereas, the term 'travels' tends to include all the activities that are undertaken during the course of a journey. If you go to Xian, stay in a hostel, travel (!) by bus to see the Terracotta warriors, accept a ride by car to the Great Wild Goose Pagoda, view the pagoda, travel back into Xian by bus,buy an evening noodle meal, and walk back to the hostel in the snow then ALL those activities are very much part of your "travels". The bus ride, the warriors viewing, the noodle eating and the walking through the snow.
The above distinction is not one that would normally be consciously made. But its real.