Charles of Bourbon, king of Naples and Sicily, commissioned a new royal palace at Caserta in 1752. The inland site offered greater security than coastal Naples and space for a planned administrative center, court, gardens, industries, and infrastructure. Architect Luigi Vanvitelli conceived a vast rectangular palace divided by four courtyards, approached on an axial route and connected visually with an immense park. The project asserted Bourbon independence and state-building as much as dynastic magnificence.

Construction began with a ceremonial foundation stone on Charles’s birthday. Vanvitelli coordinated masonry, engineering, sculpture, landscape, and water supply, but the king’s accession to the Spanish throne in 1759 reduced his direct involvement. Work continued under Ferdinand IV and, after Luigi’s death in 1773, under his son Carlo. The palace became habitable before every element of the original vision was complete. State apartments, chapel, theater, grand staircase, and vestibules combined late Baroque drama with emerging Neoclassical discipline.

The park extends northward from the palace through formal gardens, basins, fountains, cascades, and wooded areas. Water reached it through the Carolino Aqueduct, another Vanvitelli engineering project drawing from springs many kilometers away. Under Queen Maria Carolina, an English Garden introduced less formal landscaping, rare plants, ruins, and picturesque structures. The associated royal estate at San Leucio developed silk production and an experimental community, linking the palace complex with Bourbon economic and social policy beyond court ceremony.

French and Bourbon restorations, Italian unification, military occupation, and changing state uses altered rooms and collections. During the Second World War, Allied forces used the palace as headquarters. German forces in Italy signed terms of surrender there in April 1945, effective in May. Postwar museum use expanded, while conservation repaired roofs, stone, decoration, gardens, and waterworks. Furnishings now represent several royal periods and transfers; not every displayed object remains in its original room or arrangement.

The palace survives on its original site with extensive eighteenth- and nineteenth-century fabric, but the ensemble was never completed exactly as Vanvitelli first imagined and has required continual restoration. UNESCO listed the palace, park, aqueduct, and San Leucio complex in 1997, recognizing an integrated territorial design rather than the residence alone. Managed by Italy’s Ministry of Culture, the Reggia is a ticketed museum and park. Its authenticity lies in the monumental plan, surviving construction, landscape engineering, and documented layers of royal, military, and public use. The water axis remains the clearest expression of Vanvitelli’s effort to unite architecture, infrastructure, and territory.