At Thanksgiving, the house brims with family members. Pictures of interior design After grace, Marc asks the age-old question, What are you thankful for? Skateboards and chocolate top the list, but sentimental entries include Oma (Dutch for grandma), good health, and a family gathering. The neglected 4,000-square-foot structure with a warren of rooms wasn’t exacdy a dream house. But its four-story tower, a former lookout for vessels in distress, and its great double doors, which used to swing open and spit out lifeboats, captured Marc’s imagination.