Open Data is free public data published by New York City agencies and other partners. Open Data is an opportunity to engage New Yorkers in the information that is produced and used by City government.

The NYC Municipal Archives Online Gallery provides research access to more than 1,600,000 digitized items from the Municipal Archives' vast holdings, including photographs, maps, blueprints, motion-pictures and audio recordings.

The Archaeological Repository is a project of the Archaeology Department of the New York City Landmarks Preservation Commission (the “LPC”). Opened in 2014, the purpose of the Repository is to curate the city’s archaeological collections and to make them accessible to archaeologists, researchers, teachers, students, and the public.

DATA: Database listing archaeological reports that the LPC keeps on file.

The New York City Department of Parks & Recreation (DPR) is New York City's principal provider of recreational and athletic facilities and programs.

NYC Parks Monuments: This data is table of monuments that is maintained by NYC Parks. Prior to being stored electronically the original data was stored on index cards dating back to the 1940s. The database is updated periodically to include new monuments, and information updated for existing monuments. For questions about the dataset please contact Parks’ Art & Antiquities division at (212) 360-8143.

Directory of Historic Houses: Historic Houses in New York City Department of Parks & Recreation properties.

Directory of Historical Signs: Text of signs installed throughout New York City Department of Parks & Recreation properties that explains whom the park is named after and why, as well as the history of the site

The New York City Landmarks Preservation Commission (LPC) is the New York City agency charged with administering the city's Landmarks Preservation Law. Created in 1965, it is responsible for identifying and designating the City's landmarks and the buildings in the City's historic districts. The commission also regulates changes to designated buildings.

Archaeology Reports Database:: Database listing archaeological reports that the LPC keeps on file.

Historic Districts: This dataset contains boundaries and associated attribute information for all designated historic districts or areas under consideration for historic district designation (i.e. calendared) by the New York City Landmarks Preservation Commission (LPC), including items that may have been denied designation or overturned.

LPC Individual Landmark and Historic District Building Database: The LPC’s Individual Landmark and Historic District Building Database contains building-by-building information from the more than 50 years of the Commission’s individual landmark and historic district designation reports. The data set contains detailed information on close to 36,000 buildings or sites, including the nearly 34,000 historic buildings within the city’s 141 historic districts and the 1,408 individual landmarks (note: some individual landmarks include multiple buildings).

Scenic Landmarks: This dataset contains boundaries and associated attribute information for all designated scenic landmarks or areas under consideration for scenic landmark designation (i.e. calendared) by the New York City Landmarks Preservation Commission (LPC).

The Preservation History Database is the first-stop encyclopedic resource for those interested in topics related to the history of preservation. This educational tool is meant to function as an encyclopedia of New York City’s preservation history, a gateway for academic researchers, and a resource for contemporary preservationists. Entries in the database are not in-depth explorations and analyses; their purpose is to provide comprehensive, accurate, and succinct facts that direct visitors to other available resources. To make the Preservation History Database a useful research tool, the Archive Project aims to identify archival collections, oral histories, and digital resources that are relevant to each entry and make information on their locations and accessibility easily available. The database is continuously updated with new topics and new information. Contact us with any questions, comments, or suggestions. You can view records organized by: People, Places, Organizations, and Public Policy

An online catalog interface to the digital collections as well as important materials held by other New York State repositories.

A project of NY 3Rs Association and part of the New York State Board of Regent's New York Digital Collection initiative, this research portal is a gateway to freely accessible digital collections of libraries, museums and archives from all over the state..

A program of the State Education Department, they lead the efforts to manage, preserve, ensure open access to, and promote the wide use of materials that support and document the history of the state. Access is provided through the Digital Collections and other Research Services.

Part of the Office of Cultural Education within the New York State Education Department; online access is provided to digitized materials from the collections through the Online Exhibits and the Digital Collections.

Explore digital content from libraries and cultural heritage institutions that document the rich history of New York’s Hudson River Valley. Discover photographs, diaries, correspondence, artwork, newspapers, oral history interviews, and more that contribute to the story of the people, places, and events that make this region exceptional.