Yes, you can visit other Schengen countries with a Spain Visit Visa. A Spain visit visa generally allows entry into other Schengen Area countries if the visa indicates it is valid for the whole Schengen Zone, not just Spain. This lets you travel without extra border checks across 26 European countries. Still, Spain should be your main destination or first point of entry for the visa to be valid. Your travel plans and paperwork should show this to avoid problems with your visa.