Looking for a grand romantic gesture this Valentine's Day? Consider New York City's sewage tour. The Department of Environmental Protection is again offering Valentine's Day tours of the Newtown Creek sewage treatment plant in Brooklyn—three tours this year, in fact, due to "overwhelming demand" after the first two quickly filled up. Highlights include the plant's giant egg-shaped digesters, which break down noxious waste into harmless sludge and gas. During last year's tour, the plant's gung-ho superintendent warned the visitors a digester egg was about to emit a foul odor. It didn't disappoint.