Sikhote-Alin is a great and exotic place for hiking as I think.
"Sikhote-Alin is a very beautiful natural place: the sea of Japan with cliffs and stacks, lagoon lakes, waterfalls, rivers full of rapids and bright streams, the taiga forest here is like a forest from fairy tales. nnumerable mountain ranges and spurs, cut by river and steam valleys form the panorama of the region. Here and there among them rise huge tops; lowlands occupy big river valleys and sea Holocene terraces.
"Sikhote-Alin Mountains possess a great biodiversity. Here inhabit noble and spotted deer, roe deer, wild boar, Himalayan black and brown bear, Far Eastern wild cat, yellow-throated marten, sable, Amur ghoral and Siberian tiger. Rivers are filled with tasty fish: brown trout, char, chum salmon comes, cherry salmon and humpback salmon."(from wikitravel http://wikitravel.org/en/Sikhote-Alin)