900-Pound Steel Time Capsule Buried at Independence Hall

A 900-pound stainless steel time capsule was sealed and buried near Independence Hall in Philadelphia on Saturday, July 4, 2026, as the United States marked its 250th anniversary. The capsule, designed to remain undisturbed until the nation's 500th birthday in 2276, contains contributions from all 50 states, five U.S. territories, Washington, D.C., and numerous cultural and sporting organizations, creating a collective snapshot of the country.

The ceremony at Independence National Historical Park featured remarks from Philadelphia Mayor Cherelle Parker and park officials. The capsule's contents reflect a wide range of American life, from historical artifacts to modern technology. Notable items include a piece of fabric from the Wright brothers' airplane, a bone from an endangered North Atlantic right whale, an Olympic gold medal from the 2026 Cortina Winter Games, and a prediction about California generated by an artificial intelligence chatbot. The collection also includes state minerals, Native American crafts, and digital archives from the Library of Congress.

Engineers from the National Institute of Standards and Technology designed the "zombie-proof" capsule to withstand...