Hey, apologies for the basic question but could someone confirm which immigration centre in Bangkok I need to go to if I have a 60-day tourist visa which I want to extend 30 days. I've never extended in Bangkok before and I'm seeing a lot of conflicting information
TLDR : Answer Summary
To extend your 60-day tourist visa by an additional 30 days in Bangkok, you should visit the main immigration office located at the government complex on Chaengwattana Road (Building B). Specifically, head to Section J, where they handle extensions for tourist visas.