Mercadona has opened its largest online warehouse in Spain, located in the Madrid region. The company invested 54 million in this project. Further details about the warehouse can be found in the original source, including a photo of the facility in operation.

The image shows a worker at the new online warehouse, giving a glimpse into the inner workings of the site. For more information about Mercadona's new online warehouse, readers can refer to the original article, which may provide additional context and insights into the company's investment and operations in the Madrid region.