Later this month, my family & I have the opportunity to travel to Montreal from either Vermont or New Hampshire.  We've never been to Canada & so are excited & curious.  Since we'll be there a few days, are there any places considered 'must sees' ?  I'm thinking of taking in the Botanical Gardens, downtown, the old city.  Are those areas/places too ambitious for the time?  Is getting around by Metro easy enough?  Is Metro better or worse than auto?  Montreal looks beautiful & admittedly we're just getting started. Thanks active rainers!