Anthony,
Heaven is a good way of describing it for the naturalist. On the two full-day trips I made to a nature reserve and national park, my time there was limited as I was always stopping on en route to look at something interesting, and the smallest of patches of waste ground in the corner of a cultivated area would have a high density of butterflies. Something we never see in the UK these days, nor in other parts of western Europe - I have just returned from seven days in the Savoie Alps, and say maybe twenty butterflies in a week.