Yet nickel capital Norilsk - the city with the highest industrial emissions - does not feature in the top ten.
On 10 February, eight travellers set out on a two month odyssey covering 4,000 km through some of the world's most inhospitable terrain.
After US warnings about threat of ISIL, Da'esh and al-Qa'ida attacks around Christmas, senator Franz Klintsevich urges tourists to head east.
But who were the mysterious Paleolithic artists of these rock drawings?
Eight seamen from the sunken Amuerskaya freighter remain missing from the gold carrying freighter which sank in a storm in late October.
Exceptionally heavy snow falls lead to hunger and death for hardy animals.
After three weeks, the authorities are at a loss to explain what happened to eight out of nine members of the wrecked Amurskaya vessel.
Druzhok was rescued once but swam back to do his duty on the doorstep of the waterlogged house in Eastern Russia.
Cops in the far north of Siberia 'to be issued with reindeer instead of police cars'.