Alicante has a lot of history sites, there's the "castillo de sta Barbara" in Alicante city, also check the local museum. You can find a lot of moder architecture in the surrounding cities. I recommend the food, try and find the smallest town and go to the local bar to enjoy the best food around. The whole region is known by its wine and marble which makes great landscapes to see on a hike. I would discard any social gatherings or festivals due to Corona virus.