Castillo de Monjardin produces wines from Navarra, a region in northern Spain known for its diverse terroirs and varied grape varieties. The winery's portfolio reflects this diversity: Viñedos de Altura Chardonnay, a white wine that captures the character of high-altitude vineyards; Deyo Merlot de Autor, a structured red; and Old Vines (La Cantera) Garnacha, which draws from mature plantings of this Spanish staple. These wines have been assessed by major critics including Wine Enthusiast, Decanter, Wine Spectator, and Wine Advocate. Navarra's continental climate and mixed soils—ranging from clay to limestone—support both international and indigenous varieties, allowing producers to craft wines with both precision and regional identity.