A collection of treasures including a molecular safety deposit box and a glass Coke bottle were encased in metal this week, not to be opened for another 250 years.
Known as America’s Time Capsule, the commemorative project is part of the country’s 250th anniversary celebration, which will see the vessel buried on Independence Mall in Philadelphia this Fourth of July.
The capsule was curated by America250, an organization created by Congress in 2016 to commemorate the 250th anniversary of the signing of the Declaration of Independence, which falls on July 4, 2026.
Beyond the more traditional celebrations, the group crafted a time capsule intended to “preserve a representative record” of the country as it crosses the anniversary threshold. The capsule itself is a 900-pound (408-kilogram) steel cylinder designed to withstand temperature and moisture conditions that should keep it intact for another 250 years.
Constructed from the soft metal indium, the cylinder has a structure that can deform itself under load “to fill any microscopic imperfections in the sealing groove.” But the cylinder will also be situated in a protective air pocket created by a 1,100-pound stainless steel bell jar placed over it. The capsule was sealed for the long haul this week at the National Institute of Standards and Technology in Gaithersburg, Maryland.
“Now that America’s Time Capsule has been sealed, it carries with it a remarkable record of this moment in our nation’s history,” said Rosie Rios, the America250 chair. “This moment is as much about the future as it is the past. When it is opened in 2276, future generations will see the care, pride, and optimism with which Americans marked our 250th anniversary.”
Optimism isn’t exactly the prevailing mood of the era, as the U.S. strains under the weight of an affordability crisis, political polarization that turns violent at times, and a deep-seated disillusionment about the American dream. Nonetheless, America250 may succeed in its broader mandate to “invite people across the country to reflect on the nation’s past, present, and future.”
But what’s in it?
The well-engineered capsule is likely to last 250 years, but what will future Americans find if the union itself holds? According to America250, most of the capsule’s contents come from the 50 states, the District of Columbia, and five territories, “each offering a distinct record of local history, identity, culture, innovation, and community life.” Congress, the Supreme Court, and the Executive Branch also pitched in their own items meant to provide a snapshot of political life in the year 2026.
The capsule is full of letters and documents, as you’d expect, but also some more exotic items. Coupling cutting-edge science and history, the capsule hosts a “molecular data storage device” the size of a pencil eraser that contains man-made DNA encoded with digital versions of Library of Congress treasures, like Francis Scott Key’s handwritten lyrics for “The Star-Spangled Banner.”
“By placing some of our most treasured digitized collections into synthetic DNA, we are helping ensure that future generations can encounter foundational pieces of American history in a form designed to endure for centuries,” the acting librarian of Congress, Robert R. Newlen, said of the capsule’s contents.
In a fittingly American turn, some major corporations put their own mark on history through the time capsule. A glass Coca-Cola bottle stuffed with the sheet music for the song “I’d Like to Buy America a Coke” made it in, as did an iPhone 17 Pro Max. Sports are well represented too, including a 2026 NFL playoffs coin and personal letters from the commissioners of the NBA, NHL, and MLB.
The time capsule is an interesting exercise in nostalgia, but the American celebration that captured the country’s current vibes best was undoubtedly the flurry of UFC fights at the White House last weekend. There, men pummeled each other bloody for advertisers and white-hot betting markets under an enormous metal claw towering over the seat of American democracy.