Principality Stadium, formerly known as the Millennium Stadium, is one of Wales' most iconic landmarks and a true point of pride for the city of Cardiff in the United Kingdom. It is the largest sporting arena in the country and holds UEFA's highest category four rating. Located in the heart of the city, it attracts not only sports fans but also tourists from around the world.

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The arena was built in 1999 specifically for the Rugby World Cup, replacing the historic Cardiff Arms Park stadium. In 2016, the stadium was renamed Principality. One of its unique features is a fully retractable roof, making it the second-largest stadium in the world with such a design, allowing events to be held in any weather.
Primarily, the Principality is the home of the Wales national rugby union team. However, its multi-purpose nature allows it to host other large-scale events: from football matches—including the 2017 UEFA Champions League final—to concerts by global stars such as The Rolling Stones, Beyoncé, and Metallica. Special tours are available for visitors, allowing them to peek into the athletes' dressing rooms and walk through the players' tunnel, soaking up the atmosphere of this legendary venue.