One species of plant goes extinct each day. Though this vault in Norway, 600 miles from the north pole, is only for agriculutral seed, it is meant to maintain international plant diversity (which seems opposite to the way things work here in the corn belt where monoculture rules). The vault will maintain a temp below freezing even in worst case global warming forecasts, withstand natural disasters, and survive a nuclear strike. Seed viability is estimated at 200-1,000 years (the latter if internal a/c stays on and keeps it below 0). Check it out.
Wouldn't you go here for a romantic walk? (couple in image above)
For a viewpoint against the vault, go here: