Three and a half years after his death, another one of Microsoft co-founder Paul Allen’s passion projects — the extensive collection of aviation and military artifacts that was housed at the Flying Heritage & Combat Armor Museum in Everett, Wash. — has reportedly been sold off by his estate.

Air Current magazine reported late last week that the museum’s entire collection was sold “in its entirety.”

“Many of the projects are being crated for shipment to their new home while the flying aircraft are being readied for cross-country trips,” the magazine said on its Facebook page. “One man’s dream has come to an end, but another man’s dream has just begun.”

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The collection’s new owner is Steuart Walton, the grandson of Walmart founder Sam Walton, according to Scramble, a publication of the Dutch Aviation Society.

Read more: Geek Wire