Penn Station, Interior, Manhattan.

The Pennsylvania Railroad (PRR), also known as the "Pennsy" was established in 1846 in Philadelphia, Pennsylvania. By 1882 it had become the largest railroad, the largest transportation enterprise, and the largest corporation in the world. With 30,000 miles of track, it had longer mileage than any other country in the world, except Britain and France. Its budget was second only to the U.S. government. Its only formidable rival was the New York Central (NYC), which carried around three-quarters of PRR's ton-miles. Until the early 20th century, the PRR's rail network terminated on the western side of the Hudson River at Exchange Place in Jersey City, New Jersey. Manhattan-bound passengers boarded ferries to cross the Hudson River. The rival New York Central Railroad's line ran down Manhattan from the north under Park Avenue and terminated at Grand Central Depot (later Grand Central Station, now Terminal) at 42nd Street. The development of the electric locomotive made tunnels feasible and on November 27, 1910, Penn Station was fully opened to the public. Penn Station head house that was demolished in 1963. The demolition was controversial and caused outrage internationally and became a catalyst for the architectural preservation movement in the United States. Within the decade, the Grand Central Terminal was protected under the NYC's new landmarks preservation act. The current 1968's Penn Station is completely underground and sits below Madison Square Garden, 33rd Street, and Two Penn Plaza.

The train station image dataset is picked from the world's largest public domain archive. Made in two steps - first, curated set, followed by running 25 Million public domain images through image recognition, it comprises more than 50,000 train station images from all countries and times. All images are in the public domain, so there are no restrictions on the dataset usage - educational, scientific, and commercial.

Abbott was born in Springfield, Ohio, and later moved to New York City, where she studied sculpture. She became interested in photography and worked as an assistant to the famous photographer Man Ray in Paris. Abbott is known for her black and white photographs of New York City architecture, which she began taking in the 1930s. She also documented the city's changing urban landscape over several decades. Abbott's work has been exhibited in major museums around the world, and she has received numerous awards and honours for her contributions to photography. Her legacy as a photographer continues to inspire and influence artists today.