May 2005 — People walking through a New York City subway station in May 2005.

May 2005 — Woman walking in a New York City subway station in May 2005.

May 2005 — A man reads a book at a New York City subway platform in May 2005.

May 2005 — Stairs down to Astor Place subway station in New York City in May 2005

September 2008 — The Lexington Avenue–63rd Street station in Manhattan, part of the IND and BMT lines of the New York City Subway, is shown here in its distinctive red-tiled design. Opened in 1989 as part of the 63rd Street Tunnel project, the station serves the F and Q trains, linking the Upper East Side to Queens and the Second Avenue Subway. Its sharply linear geometry and long central platform exemplify late-20th-century transit architecture, emphasizing function and durability. The bright red glazed brick walls contrast with the metallic fixtures and fluorescent ceiling strips, creating a visual rhythm typical of New York’s underground infrastructure during the city’s major transit expansion era.

September 2008 — Dimly lit by overhead fluorescent lights, this photograph captures the entrance to the downtown-bound 6 train platform in the New York City Subway system. The black-and-white directional sign with the green circle route marker is part of the MTA’s standardized Helvetica signage, directing riders toward Manhattan. The scene’s warm tones from aged steel columns and peeling paint reveal the enduring character of New York’s century-old transit infrastructure — a utilitarian design that continues to serve millions of daily commuters. In the background, the red exit sign points toward street level, where the pulse of the city resumes above ground.

March 2012 — Crystal City is a side platformed Washington Metro station in the Crystal City neighborhood of Arlington, Virginia, United States. The station was opened on July 1, 1977, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). Providing service for both the Blue and Yellow Lines, the station is located on 18th Street in between the Jefferson Davis Memorial Highway and South Bell Street. The station is also accessible from the underground network of shopping centers and restaurants extending beneath Crystal City. This is the final indoor transfer point between the Blue and Yellow lines in the southbound direction. In inclement weather, commuters may prefer to transfer at Crystal City rather than at King Street–Old Town, which is outdoors. The station is also served by the Metroway bus rapid transit line. Some Metroway buses terminate here rather than at Pentagon City station. Source: <a href="https://en.wikipedia.org/wiki/Crystal_City_station_" rel="noreferrer nofollow">en.wikipedia.org/wiki/Crystal_City_station_</a>(Washington_Metro)

December 2012 — Lake Street and Dearborn in downtown Chicago in December 2012.

December 2012 — The O'Hare Train Station in Chicago.

December 2012 — Trains at O'Hare International Airport in Chicago.

September 2017 — Entrance to the underground level of Zürich Hauptbahnhof (Zurich Central Station), one of Europe’s busiest railway hubs, serving over 400,000 passengers daily. The signage indicates access to the SBB national rail network and SZU suburban lines, along with the underground shopping complex “ShopVille.” Built into the heart of the city, Zürich HB’s design integrates modern transport infrastructure with pedestrian access and retail spaces, showcasing Switzerland’s efficiency in urban transit engineering.

September 2017 — A yellow BVG tram glides through the wet streets of Berlin at dusk, its reflection faintly shimmering on the rain-darkened tracks. The city’s extensive tram system, one of the oldest in the world, continues to serve as a vital part of daily life — connecting neighborhoods across the capital with quiet precision. Cyclists share the street below, a hallmark of Berlin’s commitment to sustainable urban transport and rhythmically layered street design.

September 2017 — A narrow, fenced pathway runs beneath the towering structure of Berlin Hauptbahnhof — Germany’s largest and most complex railway station — where elevated train lines stretch above the Spree River. The gleaming glass panels and steel framework of the upper platforms contrast sharply with the damp pavement and industrial underpass below. Puddles glisten from a recent rain, while construction barriers and wild greenery frame the scene, hinting at the city’s perpetual state of transformation. Built as a symbol of reunified Berlin, the Hauptbahnhof connects north to south, east to west — a convergence of architecture, engineering, and history that mirrors Berlin’s layered identity. The stillness here beneath the trains creates a hidden perspective on one of Europe’s busiest transport hubs, where modern motion meets quiet decay.

September 2017 — The Berlin Central Station in Berlin, Germany.