Royal Church of San Antonio Monument · Aranjuez, Las Vegas, Madrid A royal chapel built on the south side of the main square that gives access to the Real Sitio de Aranjuez, commissioned by Ferdinand VI, who dedicated it to San Antonio de Padua in place of the former Oratorio of Philip IV. Construction began in 1752 to designs by Santiago Bonavía, and Charles III later had it enlarged with a square section topped by a two-pitched roof. It has a circular central plan and is topped by a lead-clad onion-shaped dome that dominates the far end of the plaza de San Antonio. After Bonavía's death in 1767, the architect Jaime Marquet built the galleries that link it to the nearby buildings. Royal Decree 1412/2002 declared the church and its adjoining arcades a Bien de Interés Cultural (Spain's highest level of heritage protection), with the rank of monument. Photo: Zarateman (CC0) What to see and do in Aranjuez