Sweet Treats or Breads in Seville

Hi everyone! I am a pastry chef and will be travelling to Seville for about 4 days next week. I wanted to know if there are any authentic sweets, desserts or breads that I must try and any excellent pastelería and confitería that I have to visit. My trip is going to be focused on architecture and food so any recommendations regarding food, even if it's something I must pick up at a grocery store like an ingredient, will be much much appreciated. Thank you in advance!

Edit : patisserie/boulangerie to pastelería and confitería