CaixaForum Madrid is a modern art gallery (museum) in the centre of Madrid, Spain. It is sponsored by the Catalan-Balearic bank La Caixa and located next to the Paseo del Prado at number 36.
It was constructed by the Swiss architects Herzog & de Meuron from 2001 to 2007, which combined an old abandoned electrical station with new construction of floors which are encased with oxidized cast-iron, which was meant to be of a similar color and weight as the brick below. Next to it is an art installation of green plants growing on the wall of the neighbouring house by French botanist Patrick Blanc. The red of the top floors with the green of the wall next to it form a contrast. The green is in reflection of the neighbouring Royal Botanical Gardens.