Tucked into the Chamartín district, Parque de Berlín is a small neighborhood park built around three genuine fragments of the Berlin Wall. The centerpiece is a fountain flanked by the concrete slabs, with a bronze bear — the symbol of Berlin — standing nearby. An inscription commemorates the fall of the Wall in 1989.
It's a pleasant spot for a stroll or a rest on a bench, though it's more of a local park than a major attraction. Worth a detour if you're in the area, especially if the Cold War history angle appeals to you.