The Norfolk Botanical Garden has over 3000 roses and is well worth a visit. The entrance is lined with a beautiful hedge of Knockouts. They aren't elitist, but most of their roses are hybrid teas. They also have a large number of old garden roses, some of which had already bloomed. I'm mainly interested in modern shrubs, and was a bit disappointed in not finding more. I stuck my nose in all 3000, an embarrassment of riches.