From New York to California and even some paradisiacal islands, medieval architectural fragments or entire monuments were re-assembled and rebuilt by wealthy American collectors. If Alva Vanderbilt, Isabella S. Garner or John P. Morgan were the first to introduce medieval art to United States collections, it was not until 1914 and the opening of the spectacular George Grey Barnard cloisters that the public could visit a place especially dedicated to French medieval architecture. The reconstruction of these remains reveals different practices of collecting and displaying but also raises the question about the reasons for such a massive hemorrhage of European architectural heritage. Most long-term properties of the French Church had already s...