Pont du Gard by antistar
Not strictly in Nimes, but accessible from it, this impressive Roman construction is the only remaining three tier Roman aqueduct in the world. Buses to the Pont du Gard run regularly from behind the train station in Nimes, take about an hour, and cost about 10 euros for a return ticket. It's a local bus, not a tour, so you'll need to organise your visit yourslef. The bus drops you a short walk away from the aqueduct, and it isn't terribly well sign-posted, so you will probably have to ask the bus driver, or the locals, for some help.The curious thing about this aquaduct is how it appears on the five euro note. The new European currency was meant to depict typical European architecture, but wasn't mean to depict any specific building. This was because they didn't want to show any favouritism to any one nation or city. Someone obviously had the bright idea of showing an Roman aquaduct, a structure found across Europe and symbolic of a shared history. The only problem is the model they decided to draw had three tiers, and as I mentioned earlier, the only one of these in existence is in Nimes.