Estadio Ciudad de Lanús Néstor Díaz Pérez, football stadium in Lanús, Argentina

The Estadio Ciudad de Lanús Néstor Díaz Pérez is a football ground in Lanús Este whose concrete stands were rebuilt between 1990 and 2003. Its exterior on Ramón Cabrero street, shaped and coloured like a ship docked in a port, faces a pitch lined by a low red wall with Coca-Cola and Powerade advertising. Tiered stands in alternating red and white bands rise under a cantilevered roof on red columns, and a water moat separates the plateas from the field, which has no perimeter fencing.

The stadium was inaugurated on 24 February 1929 with a friendly match against Boca Juniors, won 1–0 by Lanús. It was built on 50,000 m² of land ceded free of charge by the Ferrocarril del Sud, five blocks from the club's previous wooden ground. The first official match followed on 24 March, a 5–2 win over Platense. Wooden stands were replaced by concrete between 1990 and 2003.

Fans call the ground La Fortaleza, the Fortress, for its record as a hard place for visiting teams. The name Néstor Díaz Pérez honours the club president under whose mandate the stadium was built, while the Ciudad de Lanús part was added in 2004. The south stand is named Sector Alejandro Solito after a former club official.

The stadium is easily accessible by several bus lines and the General Roca railway. There is ample parking with over 250 spaces available, making it convenient for visitors arriving by car on match days.

The stadium was built in 1929 on land freely donated by a railroad company, making it a rare example of a sports venue given as a gift. The first official match was played shortly after opening against Platense, resulting in a 5-2 victory for Lanús.