US seals 250-year time capsule in Philadelphia for 2276 opening
To celebrate the 250th anniversary of its independence, the United States has interred a time capsule weighing almost a ton at Independence National Historical Park in Philadelphia. This sealed, waterproof container holds roughly 200 items that reflect all 50 states and every branch of the government. The capsule is scheduled to be opened on July 4, 2276, when the country marks its 500th anniversary.