Explore details about location Meruelo-Castillo. Meruelo-Castillo is a location situated within the Meruelo alongside other areas such as Barrio Bocillo, Meruelo-Castillo, Barrio La Serna. Additionally, some smaller parts of Meruelo-Castillo include specific areas like El Astillero-Santoña, Barrio La Serna, Barrio Bocillo adding to the diversity of its landscape.