the track Wish I had an angel sounds almost industrial-ish.
Industrial a la Rammstein, best track of the album IMO.
in my opinion and Nightwish is the best in their genre - symphonic metal.
Ehm... 'symphonic metal' includes a lot of things, including the style Tristania plays, Dimmu Borgir's version of black metal, etc. Those bands are also highly influenced by classical music and use that (therefor symphonic).
Most people see Nightwish as 'powermetal', but IMO Blind Guardian is a much better band in that genre and I'm not that fond of that band either. For me it looks like Nightwish is 10% music, 30% Tarja, 10% other members and 50% (over)hype. There are much better powermetal-bands out there.