The renovation and expansion in 2004 of a diminutive former industrial loft building into luxury residential condominiums is arguably one of the most startling and compelling projects of any size in the city in decades. It solidified the reputation of award-winning Dutch architect Winka Dubbeldam, principal of Archi-Tectonics, as a forward-thinking residential architect.Perhaps most remarkable is that The Greenwich Street Project, as it is known, incorporates the existing facade of the older building with a new steel-and-glass structure. Blue-tinted glass covers thenew portions, cascading down from setback upper floors that extend over the six-story older structure. The new glass tower is a full 11 stories high and features three lower floors of flat glass curtains, with the remaining "crinkled" stories forming dramatic asymmetric curves. Where the north side of the older structure meets thenew construction are six small white parapets that serve as a 'crease,' calling to mind hooks in a zipper or an ocean liner's lookout. A four-story glass penthouse in the modern tower wraps around the original warehouse building, providing unobstructed river views. Amenities at this pet-friendly residence include a 24 hourconcierge, a duplexed guest suite, a wine cellar, a multi-level fitness center with an endless swimming pool, two saunas, private "white glove" storage and a theater/screening room. Perhaps even more exciting is the location of this 23-unit development, tucked away a block from the Hudson River between TriBeCa and the West Villagein an ideal spot for experiencing the city's best luxury shopping, restaurants and cafes, art, culture and entertainment as well as Hudson River Park and Greenway with its bike and walking paths.