NEWPORT, RI — Visiting the Newport Mansions, whether in the summer sun or the splendid Christmas season, is always a transformative experience. Much as in their glory days, the "summer cottages" of the Gilded Age give off an aura of being effortlessly elegant and spotless, as if they were frozen in time — unaffected by dust and age. In reality, a small army of conservators, caretakers and restorers who, if they do their job properly, the public never knows was there.

Every year, one of The Preservation Society of Newport County's four "main" mansions — The Breakers, The Elms, Rosecliff and Marble House — closes to the public during the six weeks between New Year's Day, which marks the end of the busy Christmas season, and Valentine's Day. During this period, the selected mansion receives a deep clean, addressing everything from furniture to drapes to individual decorations placed on mantels and side tables. Each item is meticulously inspected, cleaned and cataloged before everything is placed exactly where it came from, readying the house for the next round of visitors when it reopens. Each item is carefully cataloged and tagged. (Rachel Nunes/Patch) This year was Marble House's turn for a deep clean. While from the outside the iconic Vanderbilt mansion looks unchanged, inside there is a flurry of activity, with a massive scaffold set up along the grand staircase mezzanine and bright orange plastic sheeting rolled out to protect the floors. Just off the main foyer is the famous "gold room," an opulent salon covered in gold leaf. During the cleaning process, the room is a sort of command center for conservators, who work at a maze of tables underneath bright spotlights. Here, each painting in the house is carefully disassembled, cleaned and assessed for further damage, as nearby broken or structurally unstable furniture is carefully treated.

"It's all about finding the right material to match the object," said Carola Schueller, one of the conservators, saying that, for example, certain types of glue could work well on one object, but might be too brittle when dry to be a good choice for another. Conservator Carola Schueller carefully injects glue beneath the veneer of a sideboard door. (Rachel Nunes/Patch) Kathy Garrett-Cox, the Preservation Society's collections manager, said the "deep cleans" are a good opportunity to really assess what needs attention in a specific mansion. "Our big houses never really close, so this is our once-per-year opportunity to do this," she said. "You can hardly put in a scaffolding while the building is open to the public."

The scaffolding she references is on the mezzanine landing of the house's grand staircase, where several caretakers were hard at work cleaning the detailing around the massive windows that overlook the sea. Nearby on the second floor, Alva Vanderbilt's massive bedroom, known for its feminine white and lilac motif, was stripped bare as two other caretakers painstakingly cleaned the disassembled bed frame and armoire. Because all of the furniture and surfaces inside the homes are extremely sensitive to wear, caretakers cannot use regular cleaning sprays and solvents. Instead, most dusting is done using a small, fluffy brush and a low-suction vacuum hose, vaguely reminiscent of how a dentist gently scrapes the surface of the teeth then suctions away the plaque.

A caretaker gently brushes dust off an armoire in Mrs. Vanderbilt's bedroom, into a low-suction vacuum. (Rachel Nunes/Patch) "It's counter-intuitive, but a lot of common household cleaners have waxes or other products that either strip away the finish on furniture over time or attract dust, so nearly all of our cleaning is done using dry sponges or brushes," Garrett-Cox said. "All the work we do has as minimal of an effect on the objects as possible. Next door is Mr. Vanderbilt's room, which, during the cleaning process, is being used as a staging area for all sorts of furniture, mostly chairs ranging from tightly upholstered wooden armchairs to impossibly delicate caned pieces. These items have already been cataloged, Garrett-Cox said, and conservators determined that they are less in need of attention. While some may be wobbly or have slightly ripped fabric, the tight time frame means that the crew must prioritize.

Furniture is stored in Mr. Vanderbilt's bedroom during the cleaning process (Rachel Nunes/Patch) One of the most useful opportunities the deep clean provides, Garrett-Cox said, is the ability to determine where the public is causing the most wear and adjusting as needed. Even though the audio tours explicitly tell guests not to touch anything in the house, it's clear many people disregard the request. "We can definitely tell what people have been touching," she said with a laugh, adding that they will adjust the tour route as needed if they notice a particular piece is getting worn from people touching it.

Marble House, she continued, is lucky in that its namesake construction material is incredibly sturdy. While stonemasons were called in to relay tiles that have popped up over time, the stone doesn't wear down from foot traffic the same way wooden floors do over time. Marble floor repairs are virtually invisible thanks to the skillful work of stonemasons. (Rachel Nunes/Patch) While these six weeks are an invaluable opportunity to preserve and assess the objects, the mansion receives daily maintenance throughout the year. Every morning, a crew of caretakers carefully runs through the house, vacuums and brushes in hand, to remove the previous day's fine coating of dust. In such massive houses, the job generally takes about three hours, with crews usually starting work at 7 a.m. and finishing just before Marble House opens to the public at 10 a.m. The incredible amount of work meticulously poured into the mansions will allow future generations to continue to witness the opulence of the Gilded Age for years to come.