Extremadura: dehesa, borderland, and conquistadors
The dehesa: holm oaks, pigs, and a productive ecosystem
Extremadura holds over one million hectares of dehesa — the largest agro-silvopastoral ecosystem in Europe. The holm oak (Quercus ilex) provides acorns that feed Iberian pigs under the DOP Dehesa de Extremadura during the montanera (October–February). Each pig needs 0.5 to 2 hectares of dehesa and eats up to 10 kg of acorns per day to gain the 46 kg the PDO standard requires. The DOP Torta del Casar — a Merino sheep cheese set with vegetable rennet from cardoon thistle (Cynara cardunculus) — is made in fewer than 20 dairies, all within 50 km of Casar de Cáceres.
Cáceres and Mérida: two layers of history
The old town of Cáceres (World Heritage Site, 1986) packs 30 medieval towers and Renaissance palaces into 9 walled hectares. No single monument dominates — it is the ensemble that counts, built in grey granite with white storks nesting on every bell tower. Mérida preserves a Roman theatre (16 BC, 6,000 seats), the adjacent amphitheatre, the Aqueduct of the Miracles (830 m long, pillars 25 m high), and a Roman bridge over the Guadiana (792 m, the longest in the Roman world).
Monfragüe and Iberian megafauna
Monfragüe National Park (18,396 ha) holds the largest colony of cinereous vultures in Europe (over 300 breeding pairs) and one of the biggest populations of Spanish imperial eagles. From Monfragüe Castle, 758 m above the Tagus, a single viewpoint takes in griffon vultures, cinereous vultures, Egyptian vultures, and golden eagles. The Alcántara reservoir downstream stores 3,162 hm³ — Spain's second largest — and is spanned by the Roman bridge of Alcántara (105 AD, 194 m long, 71 m above the river).