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They've only been there since November, but Mariska Hargitay and her husband, actor Peter Hermann, are already putting their Chelsea penthouse on the market for $8.25 million in hopes of finding a better place uptown, closer to their son's private school. The O'Neill Building apartment they're leaving behind features three bedrooms, two terraces, and two floors of living space. More pics after the jump.

This image was lost some time after publication.
This image was lost some time after publication.
This image was lost some time after publication.
This image was lost some time after publication.

655 Sixth Avenue [Corcoran]