The beauty of the natural world inspires much great art, from Monet's water lilies and Van Gogh's sunflowers to the pine-forest backgrounds on wolf shirts. Arouse an Arcadian homage with today’s Groupon: for $29, you get a one-year individual membership (a $44 value) or a one-year family membership (a $58 value) to Mass Audubon.

One of the largest conservation organizations in New England, Mass Audubon cares for 34,000 acres of natural land in a network of more than 50 wildlife sanctuaries across the state. Its members receive free admission to these pacific preserves, where, alongside more than 150 endangered or threatened native species, they can breathe in Mother Nature’s perfume or have a good cry on her mossy bosom. During bird-migration season, alert gazes can capture some 300 species of sky surfer at Allens Pond on the South Coast, and visitors to Lincoln’s Drumlin Farm can re-enact Charlotte's Web with a motley band of sheep, cows, goats, and pigs.

Additionally, thrice-yearly issues of Sanctuary magazine, a natural-history journal, and Mass Audubon's Connections newsletter keep green minds saturated in a stream of nature-related knowledge, and discounts on hundreds of educational programs and binoculars, bird feeders, and gifts from the Audubon Shop keep members outfitted in hike-enhancing swag.