Spanish passport holders could apply for e-visa online and here is the procedure:-
Note : Please make sure your Spanish passport still valid for at least 6 months with 2 blank pages.
Are you looking for location of Vietnam embassy in Spain 🇪🇸? There are embassy and consulate of Vietnam in Spain, please see below for more details : Embassy of the Socialist Republic of Vietnam in Madrid, Spain 🇪🇸 Address: Calle Segre No5, 28002 Madrid, Spain 🇪🇸 Tel : +34-91-5102867 – Fax: +34-91-4157067 Email: vnemb.es@mofa.
Spanish citizens can visit Vietnam and stay for 15 days or less than without obtaining a visa. However, if you want to stay for more than 15 days, you’ll need a visa.