Visit the Prado Museum for art immersion.
Help rebuild communities devastated by wildfire.
Make and serve pasta with elderly locals.
Teach English to children in a local school.
Volunteer with an NGO supporting refugees.
Help in a community garden in a suburban town.
Support a food bank feeding families in need.
Restore a historic windmill in the countryside.
Volunteer in a cat shelter in the countryside.
Help preserve a heritage site for tourists.
Support local NGOs through fundraising events.
Plant trees to help protect the environment.
If you have more time, you can spend a day exploring each city before volunteering. If you have less time, you can skip Madrid and Dublin, and fly directly to Lisbon and Edinburgh. You can also adjust your volunteering activities based on your interests and the organizations' availability.