Real Jardín Botánico Alfonso XIII, Botanical garden at Complutense University, Madrid, Spain.

The Real Jardín Botánico Alfonso XIII is a botanical garden on the Complutense University campus in Madrid, Spain. It contains more than a thousand different plant species arranged in various specialized collections across the grounds.

The 1927 plan for the Ciudad Universitaria, commissioned by Alfonso XIII, already reserved a central plot for botanical research and teaching between the future Pharmacy and Science faculties. Architect Modesto López de Otero drew up that first scheme; later proposals followed, including one by Luis Iglesias Martí in 1992. The garden itself was built to Fernando Gil-Albert's design and took shape in autumn 2001, named after the monarch who had pushed for the space.

The garden was designed as a teaching and research center, and today students and botanists walk through it to study plant diversity. You will see groups on guided tours and many people strolling the paths between the different planted sections.

The garden lies between the Faculties of Pharmacy and Biological Sciences on the Complutense campus, at Avenida Complutense s/n. Entry is free and open to all, with no ticket needed. Metro line 6 stops at Ciudad Universitaria, and EMT buses 82, U and G also serve the area.

A central water feature in the garden holds aquatic and wetland plants that are rarely seen in this urban setting. This area demonstrates how different habitats can coexist in a smaller space.