Where in the world are the sprinkler components?

I never visited this place when I lived in Washington several years ago, or since then on visits to DC. It just reopened last week after a two-year renovation and now I think I've got to go. Not because the 1944 Dumbarton Oaks Conference which led to the creation of the United Nations was held here, not because Padarewsky signed the piano and Stravinsky hung out here, and not because of the art collection. No, what really interests me is that they've hidden their sprinkler system components in an innovative way. This is going to be a business trip Click on this link to see the picture of the renovated music room. And see if you can spot the sprinklers.. A little background courtesy of the NYT: Dumbarton Oaks is an 19th century Georgian house on several acres in the Georgetown section of DC that’s been a library/ art museum/music venue [owned by Harvard] since the 1940s. In the 1920s, the owners brought in Parisian interior designer Armand-Albert Rateau, the New York architectural firm of McKim, Mead & White and the classical muralist Allyn Cox. They added “wings to the house, covering walls and ceilings with images of foliage and mythological creatures, and installing mirrored shutters and gilded pilasters shaped like palm trees ... No other interiors by Rateau survive in the U.S.,” said James N. Carder, curator of the house. “We’ve treated ours with tender care, hiding all the new mechanicals in little crannies.” In the music room (top left), modeled after 16th-century French chateaus, repainted ceiling beams now conceal sprinkler pipes.