What is a time capsule?

Time capsules are created to preserve objects, documents, and messages that represent a moment in history for later discovery. They may be buried underground, sealed in buildings, or stored in public places with an intended opening date decades or even centuries later. Some are made for ceremonies or anniversaries, while others are designed to communicate everyday life to future generations. Well-known examples include the Westinghouse Time Capsules from the 1939 and 1965 New York World’s Fairs.