Center City: William Penn's Three-Hundred-Forty-Three-Year Experiment
Eight stops on the first urban-planning experiment in North America. Penn's sixteen-eighty-two grid is still the working blueprint of Center City; City Hall on the original central square is its warden; the four corner squares are the surviving instruments of a laboratory that has been running for three hundred and forty-three years.
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Philadelphia City Hall: The Warden on Centre Square
Philadelphia City Hall: The Warden on Centre Square
The masonry building on Penn's original central square. Built 1871 to 1901 by John McArthur Jr. and Thomas U. Walter in the French Second Empire style; 548 feet to the top of the Penn statue; the world's largest free-standing masonry building. The 19th century put a thirty-year stone tower on the 17th-century green and turned the square into civic stone.
Broad and Market: The Axis of the Grid
The intersection at the four cardinal entrances to City Hall. The geometric center of Penn's grid and the axis from which every other street descends. Broad runs north to south; Market (originally High Street) runs east to west. Both were laid wider than any colonial American street that preceded them.
Rittenhouse Square: The Square That Held
The southwest corner square of the original Penn plan. Renamed in the nineteenth century after David Rittenhouse, the Philadelphia astronomer and clockmaker who became the first director of the United States Mint. The only one of the four corner squares whose orthogonal geometry and high-status residential character continued unbroken across three centuries.
Washington Square: The Square That Buried
The southeast corner square of the original Penn plan. Renamed in the nineteenth century after George Washington. Holds the unmarked graves of Revolutionary War soldiers (Continental and British), victims of the 1793 yellow fever epidemic, and African Americans buried in segregated potter's-field plots. The Tomb of the Unknown Revolutionary War Soldier stands at the center.
Reading Terminal Market: Three Centuries on One Block
The food market that opened in 1893 in the train shed beneath the elevated Reading Railroad terminal. The market survived the post-1971 closure of the Reading Railroad, the postwar decline of downtown Philadelphia, and the rise of suburban supermarkets; it now anchors Center City foot traffic and integrates with the Pennsylvania Convention Center.
PSFS Building: The Grid Receives Modernism
The 491-foot tower at Twelfth and Market completed in 1932 by George Howe and William Lescaze. An early International Style skyscraper in the United States and the first Modernist tower in Philadelphia. National Historic Landmark December 8, 1976. Now operates as the Loews Philadelphia Hotel; the original rooftop PSFS sign is still extant.
Wanamaker Building: The Retail Monument
The twelve-story department-store building immediately west of City Hall. John Wanamaker opened his Grand Depot at this site in 1876; the present building was completed in 1911. The Grand Court inside holds the Wanamaker Organ, the largest functioning pipe organ in the world. Now operates as a Macy's.
Logan Square and Swann Memorial Fountain: The Amended Corner
The northwest corner square of the original Penn plan, renamed for James Logan, Penn's colonial secretary. Reshaped into a traffic circle in the 1910s and 1920s as part of Jacques Greber's Benjamin Franklin Parkway plan. The Swann Memorial Fountain at the center, dedicated 1924, was sculpted by Alexander Stirling Calder, son of Alexander Milne Calder (sculptor of the Penn statue on City Hall). The only one of the four corner squares whose orthogonal geometry was altered.
Best Time to Visit
Spring and early fall are the easiest months on the corridor. Late April through early June, the corner squares are in full leaf and Rittenhouse runs cool under its tree canopy; mid-September through late October, the same trees turn and the light at Logan Square in the afternoon is the clearest of the year for reading the Penn statue six blocks back down the Parkway. Summer days are humid and the City Hall plaza is exposed, but the early evening from about six o'clock onward is one of the best times to read the masonry tower against a softer sky. Winter mornings are uncrowded; January and February read the grid cleanly with the trees bare, and the seam between Penn's seventeenth-century plan and the twentieth-century skyscrapers along North Broad is most legible without summer foliage. Weekday mornings before about ten are the quietest at City Hall and on the Walnut Street walk between Rittenhouse and Washington. The Reading Terminal Market is busiest between eleven and two; arrive before eleven or after two if you want room to walk the aisles.
Pro Tips
- •Stop One reads best from the south plaza of City Hall, where you can see the full height of the tower and the Penn statue at the top in a single sightline. The four entrance arches under the building are open during weekday business hours; if you have time, walk through the central courtyard once before continuing to Stop Two.
- •The Stop Two intersection of Broad and Market is one of the busiest pedestrian crossings in Philadelphia. The corner where the audio asks you to stand is most workable as one of the four corners under the City Hall arches, where you have room to read all four cardinal directions without standing in traffic.
- •Stop Three, Rittenhouse Square, is dog-friendly and busy on weekends. The reflecting pool at the center is the cleanest single anchor for reading the square's geometry; the diagonal paths from Cret and Olmsted Jr.'s early-twentieth-century redesign converge near it.
- •Stop Four, Washington Square, is the quietest of the three squares on the corridor. Walk a slow circuit around the Tomb of the Unknown Revolutionary War Soldier and read the inscriptions before continuing. The seventeen-ninety-three yellow-fever framing in the audio lands more clearly if you have stood on the lawn for a minute.
- •Stop Five, the Reading Terminal Market, is at its commercial peak between eleven in the morning and two in the afternoon. The audio reads the market as a building and a continuous use; if you want lunch from one of the counters, plan that as a sit-down after the audio finishes rather than mid-stop.
- •Stop Six reads the PSFS Building from the south side of Market Street, looking up at the rooftop sign and the ribbon windows. The interior of the building operates as the Loews Philadelphia Hotel and is publicly accessible at the lobby; the second-floor banking hall is one of the most-preserved Modernist interiors of the period if you have time to look inside.
- •Stop Seven, the Wanamaker Building, reads its interior best during the daily organ performances at noon and around five in the afternoon, six days a week. If your walk timing lets you arrive at noon, plan a few minutes in the Grand Court to hear the organ. The bronze eagle in the court center is the city's most-cited meeting place; the Meet me at the Eagle phrase is still in everyday use.
- •Stop Eight, Logan Square, reads the Parkway sightline back to City Hall most cleanly from the south side of the Swann Fountain, where the alignment between the fountain's central jet and the Penn statue six blocks east is direct. Late afternoon light brings out the bronze figures' detail.
Safety & Precautions
- The corridor crosses major arterial streets at several stops. Broad and Market at Stop Two is a high-volume pedestrian crossing under City Hall; use the marked signals at the corners rather than crossing mid-block. The walk between Rittenhouse and Washington along Walnut Street and the walk along Arch Street to the Reading Terminal both cross numbered downtown streets with active traffic.
- City Hall and its plazas are open public space with active municipal use; the courtyard arches and the southwest entrance to the Pennsylvania State Office Building sometimes have security screening during working hours. The audio tour does not enter any building requiring screening, but expect uniformed presence at the City Hall perimeter.
- The Reading Terminal Market is busiest at lunch hour and on weekends and can feel crowded for travelers with mobility assistance or strollers. The market is fully accessible but the central aisles can bottleneck; the perimeter aisles along Twelfth and Filbert are quieter and equally legible for the Stop Five audio.
- The Benjamin Franklin Parkway between City Hall and Logan Square has wide pedestrian-scale crossings but also continuous vehicle traffic. Use the marked crosswalks at Sixteenth, Seventeenth, and Eighteenth streets; the diagonal Parkway crossings can be confusing on first approach because the traffic flow does not match the orthogonal grid.
- In summer, the City Hall plaza and the Parkway between it and Logan Square are exposed to direct sun with limited shade. Carry water for the Stop One and Stop Eight portions of the walk; Rittenhouse, Washington, and Logan Squares are all shaded but the connecting walks along Market and the Parkway are not.








