A dramatic modern home with green technology in Cold Spring Harbor is on the market for $3.2 million. Completed in 2014, the six-bedroom house, designed by Manhattan-based MR Architecture + Decor, is constructed of recyclable steel and concrete.

The back of the house has walls of glass, with glass on three sides in the master bedroom, creating the feeling of sleeping outside.

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A two-sided glass living room upstairs leads to a deck with an outdoor fireplace.

The wood-styled kitchen includes Gaggenau appliances. Green features include a solar-heated saltwater pool, a geothermal air-conditioning system and radiant heated floors.

It is listed with Peggy Moriarty of Daniel Gale Sotheby's International Realty.