For most sports fans, the stadiums in which their teams play are, to borrow shamelessly from Led Zeppelin, houses of the holy. For those not of a religious persuasion, trips to these venues are as close as they'll ever get to a pilgrimage. The songs they sing - whether Fields of Anfield Road or I'm Forever Blowing Bubbles - are their hymns.
Great works of architecture have the power to move you deeply. Most sporting venues aren't really comparable to the seven wonders in terms of architectural excellence, but there are aspects to them that can take the breath away. At the Eden Gardens in Kolkata, especially when it's nearly full, it's the Colosseum-like atmosphere that gets you. If you closed your eyes and tapped into your imagination, you could see the visiting batsmen become gladiators surrounding by roaring lions.
At the Melbourne Cricket Ground, you couldn't but be intimidated by the sheer vastness of the Great Southern Stand. From the top of it, the players are dots in a Seurat landscape. With the Adelaide Oval and the Sophia Gardens in Cardiff, it's the walk to the venue as much as the beauty of the grounds themselves that stays in the memory.