Φθιώτιδας, or Fthiotida, is a regional unit in central Greece. It is part of the Thessaly region and is known for its diverse landscapes, including mountains, plains, and coastlines along the Aegean Sea. The capital city is Lamia, which serves as a cultural and administrative center. The area has a rich history, with archaeological sites that reflect its ancient past, including remnants from the Classical and Hellenistic periods. The region is also famous for its natural beauty, featuring the Othrys mountain range and the scenic Gulf of Evia, making it a popular destination for outdoor activities and tourism.