640 2nd Street

Before meeting Michelle, but after escaping his cramped rental on West 109th Street, President Barack Obama called this Park Slope brownstone home. Obama occupied the top floor of the three-story house with his then-girlfriend during the '80s, moving in shortly after he graduated from Columbia University. While the home was at the time split up into various rental apartments, in 1994, its new owners turned it into a single-family home. Now, as The Real Deal reports, the five-bedroom beauty has just listed for $4.295 million, up for sale for the first time in 23 years.
see inside here