Digital preservation is one of the ways to make history of a nation keeps alive. The history of a nation rooted in its cultures and nature. The wealth of these cultures and nature spread in many entities and in many areas. Their existences are in a vulnerable position. One of the efforts to preserve cultural heritage and natural history is by utilizing information and communication technologies (ICT) as enabler. In this paper we overview a series of research progress on integrated approach to digital preservation of eCultural Heritage and Natural History (eCHNH) Framework. The research results show that the availability and accessibility of cultural heritage and natural history are improved. Furthermore, the unification of these assets that are spread in several entities and several geographical areas, are established through seamless integration.