Putting a man on the moon was briefly considered mankind's greatest achievement, until Neil Armstrong invented sliced bread. Savor civilization's finest creation with today's Groupon: for $6, you get $12 worth of classic sandwiches and American fare at Mac's Philly Steaks in Canandaigua, Geneva, and Rochester.

Mac's Philly Steaks flies authentic Philadelphian flavors to three New York communities—including a new Rochester eatery—on the wings of its extensive menu. A taste of the city of brotherly love accompanies Amoroso rolls or the classic cheesesteak sandwich, the savory fixings of which travel to taste buds on bread vessels at lengths of 8 and 16 inches ($6.29 and $9.59), as does the spice-bestowing Philly Hots, laced with hot sauce, peppers, and cheese ($6.29+). Five crisp salads add leafiness to the lineup ($6.29+), and diners can hear a mellifluous crunch courtesy of fried mushrooms ($4.59). Seven Hoagie options ($6.29–9.59) grant a week of sandwich variety or a feast for cartoon dwarves shooting a new movie on location.