The capital of the provincial Beira Baixa region, Castelo Branco owes its existence to the Knights Templar, who built a castle and city walls on a hillside in the thirteenth century, where a Roman castro was abandoned a millennium before. The castle and city walls, erected upon a hillside in the 13th century, stand on grounds once occupied by an abandoned Roman castro a thousand years prior. The city's rich history intertwines seamlessly with its charming old town, offering glimpses into its storied past. Notably, Castelo Branco forms an integral part of the Geopark Naturtejo, Portugal's inaugural natural park. This designation highlights the region's unique geological heritage, showcasing a landscape shaped by time, offering a captivating blend of history, culture, and natural wonders for visitors to explore and appreciate.