The architects had to create a replica that could pass for the real thing.

WSJ: Barnes Collection | Tod Williams | Billie Tsien | The New Barnes Shouldn't Work��But Does | By Ada Louise Huxtable

And in one of the coolest art projects we came across this week, Chinese artist Wang Yuyang used thousands of compact fluorescent light bulbs to create a replica of the Moon.

ENGADGET: Inhabitat's Week in Green: fluorescent bulb moon, fuel-efficient supersonic jet and a toxin-eating oyster park

According to the FDA, the technology for a company to create an exact replica of a biologic drug does not exist.

FORBES: Magazine Article

Their latest commission - to create a full-size replica of the Spitfire that crashed in front of Mr de Man on 17 March 1945.

BBC: Norfolk

To maintain the integrity of the Olympic torch intact, marketing partners may not create torches as premiums or produce replica torches.

FORBES: Olympic Hurdles For Advertisers: The Games' Unique Rules And Restrictions

Mark Frame, an orthopedic surgical trainee at RHSC, first came up with the idea to create the osteo-facsimiles after a costly university-made replica, commissioned for a procedure, failed to meet necessary proportion and size requirements.

ENGADGET: Shapeways serves up pr��t-��-imprimer 3D bones, Lagerfeld stands by for full skeletal replacement

Re-enactors use replica weapons to engage in a real fights, which are recorded and digitally enhanced to create a realistic battle.

BBC: Battle of Bannockburn attraction captures 3D battle moves