Karystos is a picturesque town located on the southern coast of the island of Evia in Greece. It is known for its beautiful beaches, charming harbor, and rich history, which dates back to ancient times. The town is surrounded by lush mountains and offers a variety of outdoor activities, including hiking and swimming. The area around Karystos is also famous for its marble quarries, which have been used since antiquity. Visitors can explore historical sites, such as the Castle of Karystos and the ancient ruins of Boukari. The town's vibrant local culture and delicious cuisine make it a popular destination for tourists.