Where does LVM store its data?

[hendrik@topoi.pooq.com]

Where does LVM store its data -- where it identifies
where its logical partitions are.  Can I take a volume
that's managed by LVM and physiclaly carry it from one
machine to another, and expect the other machine to
understand it (assuming its kernel contains LVM support,
and assuming the partitions aren't split across physical
volumes, of course?)

Actually, I suppose I'm asking about LVM2, just in case
there is a significant difference.

-- hendrik