Today, the signatures are still visible, but the document itself is very fragile. Exposure to the air or moisture and changes in temperature can damage the parchment. Too much light can cause the ink to fade.
The high-tech case protects the Constitution from these dangers. Today, the famous document is on display at the National Archives Museum.
The Constitution also needs to be protected from threats such as theft or natural disasters. For many years, the case was lowered into a vault under the floor each night. Government officials won’t say whether this is still done today. Their security plans are top secret. But they do have safety measures in place to make sure that the Constitution can be seen by people for years to come.
“Being able to stand in front of the actual document is pretty cool,” says Alice Kamps, who works at the National Archives Museum.