Catania has fewer standout sights than rival city Palermo because it's about half Palermo's size, and a significant part of its ancient history was buried under lava. One building that has been excavated is the Teatro Romano, an ancient Roman theater built on the site of a Greek theater. Under the Aragonese dynasty, Catania was the capital of the Kingdom of Sicily, and you will see traces of the grandeur of the period as you stroll around. Catania is very much a living city, with a busy commercial port. Mass tourism isn't an issue here, so you'll definitely be mixing with locals wherever you go. This is most apparent at the fish market that takes place every day except Sunday. You'll find it just off the city's main square and close to the Baroque-fronted cathedral dedicated to St. Agata, the city's patron saint.