 Scientists around the world use radiation to understand and preserve history. For example, in the Albanian National Museum of History, researchers are working with non-destructive methods, such as X-rays, to study old portraits and metal objects. Non-destructive testing methods are very important for the investigation of objects. Because they preserve their integrity, we can see the material, the inside material, without destroying the sample, without touching the artifacts. These methods provide valuable information for conservation and restoration treatments. Radiography uses X-rays to quickly and efficiently evaluate the composition of the objects without causing any damage. Radiography provides images which are otherwise invisible. It can also help find hidden flaws or cracks. A fluorescent X-ray device can detect what type of pigments or metals the artists used. This helps to date objects and renovate them in an authentic way. It is very, very important to preserve and to protect the cultural heritage because these are the only artifacts and the only original artifacts that testify about the cultural values and identity for each country.