Learn more about the ancient history of Sardinia on a tuk-tuk tour. Learn more about archaeological sites with an audio guide and local driver, where you will gain a deeper understanding of the island and its various inhabitants throughout the centuries. First, visit The Basilica of San Simplicio which is an imposing Romanesque church made entirely of granite and dates back to the 11th and 12th centuries. Then, admire the remnants of a Roman aqueduct located outside Olbia. A masterpiece of engineering for its time, this site represents the significant impact the Ancient Romans had on the island. Not far from the aqueduct is the Roman Cistern, used for the conservation of rainwater. Visit the sacred well known as "Sa Testa" which dates back to the Nuragic era at the end of the Bronze Age. Continue to the Castle of Pedres perched on a small rock hill a few kilometers outside Olbia, which was an important defensive stronghold during medieval times. Finally, admire the ancient "Tombs of the Giants" common burial ground, which is the largest of its kind on Sardinia standing at 28 meters high.