The sleek yachts sleep up to 18 people and come with floor-to-ceiling windows on the main and upper decks—something one would expect to see on land rather than water. A glass spiral staircase links all four decks. “It certainly won’t be you’re typical boat,” Verstraete says.

The distinctive curves and planes found in Frank Gehry’s designs for museums and concert halls can also be found in the six lines of jewelry he created for Tiffany. The collections feature bracelets, rings, necklaces, and earrings. Gehry, an American Institute of Architects Gold Medal winner, used materials such as pernambuco wood, black gold, and cacholong stone, along with oxidized silver, to make the jewelry, according to a Tiffany spokesperson, who declined to give sales figures. The lowest-priced items start at $125, making it Gehry’s most affordable commission ever.

The two sweaters that Meier created for fashion company Lutz & Patmos bear the clean, straight lines that have become his trademark. They include a white, buttonless cardigan for men and a white, thigh-length, belted sweater for women. “They’re very simple and very comfortable,” says the designer. The label’s sweaters typically retail for $395 to $895 and are found at up-market department stores like Barneys. (Sales figures for Meier’s cardigans are not yet available.)

Each season, Lutz & Patmos invites one guest designer to create a sweater, according to Tina Lutz. (Actresses Liv Tyler and Julianne Moore have recently designed items.) Proceeds from the sale of the sweaters go to a charity of the guest designer’s choice. Meier is donating his portion to Architecture for Humanity, a nonprofit organization that seeks architectural solutions to humanitarian crises. This is not Meier’s first foray outside architecture. He has created chairs, office furniture, and kitchen utensils in the past. But, he says, this is his first fashion venture.

Star architects have certainly not given up their day jobs. Gehry recently unveiled plans for a $750 million residential and commercial complex in Los Angeles. Foster is designing the Moscow City Tower, a 118-story skyscraper under way near the Kremlin that will be Europe’s tallest building when it’s completed in 2010. And Meier says he has a Manhattan condo project in the works, as well as a museum in Germany.

“Don’t expect big names in architecture to give up building,” says Rosa. “It’s much too lucrative a profession for that to happen.”