Verona became a Roman colony in 89 BC and developed into an important town. There are several remains from this time, including the Roman amphitheater, and the city is equally rich in Romanesque churches from the 11th and 12th centuries. Verona was an important artistic center in the Renaissance and earlier, under the powerful della Scala family. You'll meet them everywhere, referred to as the Scaligeri. The leading 15th- and 16th-century architects were Fra Giocondo and Michele Sanmicheli, who were responsible for several splendid buildings and the bastioned town walls.