A DIGITAL ARCHIVE OF WHAT USED TO BE
Everyone is going to love this. Urban Archive, the technology nonprofit that works with historical institutions, released its first web app AND IT IS SO FUN. The image above is a screenshot of me clicking on what was before 200 Chambers. Urban Archive merged open city data with the digital collections of dozens of museums, libraries and city agencies so you can explore the city’s changing urban environment in a single place. So far the platform has mapped nearly 100,000 historical images from the collections of more than 40 organizations including the Museum of the City of New York, Queens Public Library, the New-York Historical Society, and the New York City Department of Records and Information Services. The location of each photograph is standardized, verified, and then cross-checked for accuracy by a team of historians and researchers. Plus there are cool “stories” they put together like Mark Twain’s New York.

SECOND ANNUAL TRIBECA PARTY
A group of neighbors are hosting the second annual “Tribeca Party” — and all are invited. It’s once again at Thalassa, 179 Franklin, at 7p. Tickets are $115 now, $125 after Jan. 1 and $135 at the door. All excess proceeds after expenses go to Manhattan Youth and New York City Rescue Mission (The Bowery Mission). Tickets are here.

WALT WHITMAN IN LIGHTS
The owner of 375 Pearl Street, Sabey Data Center, opened a pocket park on the property that features 15-foot-tall metal panels inscribed with the poetry Walt Whitman and that light up at night. (The poet’s 200th birthday takes place this month.) The panels were designed by Tillett Lighting Design Associates. The park’s landscape and furnishings were designed by local firm Starr Whitehouse Landscape Architects and Planners.

BOOK SIGNING AT LUV MICHAEL
Luv Michael, the new non-profit where autistic men produce and package granola, will host a book signing on Wednesday for the picture book written by founder Lisa Liberatore. In it she tells the story of creating the organization for her son Michael. 42 Walker, 6-7p.