Call us weird, but we've always wanted to explore the sewers of Paris. Perhaps the urge was sparked by Victor Hugo's ghastly descriptions of the fetid underworld in "Les Miserables." Or maybe the image of the "Phantom of the Opera" was responsible: a masked maniac poling about in a gondola in his own dank and private kingdom.

Or, yup, maybe we're just weird.

Whatever. The idea of a secret, hidden world of murky canals, dripping vaults, underground rivers, reservoirs and skull-clogged catacombs existing unnoticed beneath the gay sidewalk cafes, chic boutiques and badly driven Citroens of France's beautiful capital city just . . . appealed.