An annual architectural celebration of ice is up and running again in New Hampshire and several other states. Ice Castles ... and not just by the frozen environment. Her boyfriend, Brian Jacques ...

Ice Castles, which are both temporary art installations and tourist attractions, feature towers, tunnels, archways and caves, all created by growing, harvesting and arranging thousands of icicles ...

Since 2011, Ice Castles has been dedicated to creating a world of ice caves, frozen waterfalls, and glaciers formed into archways, caverns, slides, and tunnels. (Photo by Joseph Prezioso / AFP ...