The Plaza Nueva or New Square of Bilbao is a large square of Neoclassical style at the heart of the Casco Viejo. The square is enclosed by arcaded buildings and accessed by arches known as cuevas or caves.

It was built in 1821 to replace the Plaza Vieja or Old Square at the Ribera Market.

The Plaza Nueva sits is home to a number of cafés, pintxos bars and restaurants. On Sundays, locals come here to buy and sell collectables such as used books, coins and a few antiques lines the perimeter.