From landmark buildings like City Hall to hidden gems like New York Marble Cemetery in Manhattan’s East Village neighborhood, New York is a city of endless discoveries. For one weekend each year, the organization OHNY, which stands for Open House New York, invites the public to explore hundreds of New York City’s most impressive sites. On this week's Cityscape we're talking with OHNY Executive Director Gregory Wessner, as well as checking out a couple of sites featured in this year's OHNY weekend.