Amazon.com founder Jeff Bezos has purchased the largest home in Washington.

But—for the moment—it’s not so much a home as a museum. A textile museum.

Comprised of two former mansions at 2320 and 2330 S St. NW, which sold together in 2015 for $19 million, the textile museum was open for nearly a century before being moved to the GW campus. The double-mansion property was relisted last year at $22 million, and sold to a certain Cherry Revocable Trust for a million dollars beyond its asking price. But the new resident of Kalorama—which has been in the news over the past months as the new stomping ground of both the Obama family and Ivanka Trump—is known to be Bezos.

Measuring at 27,000 square feet, the home-to-be is apparently a pied-a-terre for Bezos and his family, when Bezos’ new position as owner of the Washington Post calls him over to the East Coast from his permanent home in the other Washington. $23 million makes it a fairly significant pied-a-terre; what’s wrong with a nice little 10K square foot townhouse or Colonial?

One of the mansions dates to 1912, when Textile Museum founder George Hewitt Myers commissioned John Russell Pope to build a residence; Myers purchased the adjacent mansion a decade later.

Bezos has hired firm BarnesVanze to execute the renovation from museum to single-family home. The plans are currently under review. As both properties are on the National Register of Historic Places, they will have to be carefully examined before any alterations to the two mansions are conducted.