This spectacular stadium squats like a stranded spaceship on the River Taff's east bank. Originally christened Millennium Stadium (the new name's a nod to sponsors, not the monarchy), this 74,500-seat, £168-million, three-tiered, retractable-roofed arena was completed in time to host the 1999 Rugby World Cup. If you can't get tickets to a match, it's well worth taking a tour. Book online or at the WRU Store.

Cultural & Theme Tours activity

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During the tours you get to hang out in the dressing rooms (alas sans players), run through the tunnel to the recorded cheering of a game-day crowd and sit in the VIP box. Tours last about an hour and are held several times a day, except on event days.

Rugby is Wales' national game and when the Principality crowd begins to sing, the whole of Cardiff resonates. To watch a test here is to catch a glimpse of the Welsh psyche, especially when the Six Nations tournament is in full swing. Tickets for international fixtures are difficult to get hold of; other matches are easier. Cardiff Arms Park, Principality’s famous predecessor and home to the Cardiff Blues rugby team, lies literally in its shadow.

Outside of the rugby season the stadium is used for mammoth events such as Monster Trucks and concerts by the likes of Bruce Springsteen and Beyoncé. The British Speedway Grand Prix is held here in June or July.