Since its discovery by Europeans in the mid-19th century, exploitation during the latter half of that century and into the next was considerable. The trees, though of high lumber quality and rot-resistant, often shattered on impact after felling. What wood could be used was put into mainly building applications, and many larger houses in San Francisco and the Bay Area were built of its timber. No commercial exploitation of wild groves occurs at present, and most of these were protected for their scenic and scientific values many years ago. The giant trees are a major international tourist attraction in California. The Giant Sequoia is also highly regarded as an ornamental tree in parks and gardens of large homes and, being easily propagated from seed, is sold by many tree nurseries. Several cultivars have been named and are in the trade. The species also has potential as a managed-forest tree for timber production, but has found few applications in commercial forestry thus far.