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The Zoological Society of Philadelphia was established in March of 1859, though due to delays caused by the Civil War, the Philadelphia Zoo did not open until July 1, 1874. Still, it was the first zoo in America, a project which some settlers had hoped for since the early 1700s. Through the leadership of Dr. William Carmac, a Philadelphia physician, the zoo was finally established. When it opened, the Philadelphia Zoo charged 25 cents for adults and 10 cents for children to enter its Frank Furness Victorian gates to see the 813 animals on display. With over 228,000 visitors in its first year, the zoo even had its own wharf on the Schuylkill River. Today, the original gatehouses and gates still stand, as does the neoclassical home of John Penn, grandson of William Penn, which stands on the zoo property. The zoo holds over 1,600 animals and an award-winning animal trail system called Zoo 360, and draws in 1.35 million visitors annually.


  • Philadelphia Zoo - Zoo 360 Big Cat Crossing (image from Visit Philly)
  • Solitude House at the Philadelphia Zoo (image from Philly Zoo! Pinterest)
  • Solitude House in the 18th century (image from University of Pennsylvania)
  • Zoo gatehouse (image from Wikimedia Commons)
  • Historic image of the zoo gatehouse (image from Dr Physick)

The Zoological Society of Philadelphia was established in March of 1859, though due to delays caused by the Civil War, the Philadelphia Zoo did not open until July 1, 1874. Still, it was the first zoo in America, a project which some settlers had hoped for since the early 1700s. Through the leadership of Dr. William Carmac, a Philadelphia physician, the zoo was finally established. When it opened, the Philadelphia Zoo charged 25 cents for adults and 10 cents for children to enter its Frank Furness Victorian gates to see the 813 animals on display. With over 228,000 visitors in its first year, the zoo even had its own wharf on the Schuylkill River.

In addition to the animals, the riverside country home of John Penn, Jr. grandson of William Penn (who founded Pennsylvania), constructed in 1784, stood on the 42-acre property of the zoo, and still remains today. The villa, known as "The Solitude", is considered the most well-preserved and elegant example of neoclassical Philadelphia architecture. The Philadelphia Zoo was laid out in a Victorian garden style, with animal sculptures, ornate cages, formal plantings including botanical collections, and tree-lined paths. In 1928, it became the location of the first orangutan and chimpanzee births in a United States zoo, and opened the world's first children's zoo in 1957.

Today, the original gatehouses and gates still stand, and over 500 plant species are represented in the botanical collections. The zoo holds over 1,600 animals of 500 different species, and an award-winning animal trail system called Zoo 360, and draws in around 1.35 million visitors annually. Some of its features include the Rare Animal House, Penn's Woodland Trail, a pair of extremely rare white lions, the PECO Primate Reserve with 10 species of primates, the McNeil Avian Center (with walk-through habitats containing over 100 birds and the multi-sensory Migration Theater), and Big Cat Falls, featuring lions, leopards, jaguars, pumas, tigers, and more in habitats including waterfalls and pools, along with a simulated research station for young visitors. The KidZooU children's zoo is a L.E.E.D. certified indoor/outdoor petting zoo with sheep, mini-horses, goats, chickens, ducks, parakeets, an education center and playground, coral reef aquarium, and desert ant farm. Another first for the Philadelphia Zoo is its Zoo 360 animal trail system, a network of mesh-fenced pathways which allow the animals to travel beyond their enclosures to explore the zoo campus. Primates can explore the Treetop Trail while visitors watch, and tigers pass overhead at the Best Zoo Exhibit Award-winning Big Cat Crossing exhibit.

Historic Marker Inscriptions:

 “America’s First Zoo”
Chartered 1859 as the Zoological Society of Philadelphia. A wildlife refuge and a zoological garden, the zoo has long been committed to fulfilling its public mission: conservation, research, education, recreation.

Solitude

Designed and built in 1784 as a riverside villa by John Penn, Jr., it served as a model for country houses of the Federal period (c. 1775 – 1830). Administered by the Philadelphia Zoo since 1874, the original Adam Style features, including elegant plaster ceilings, are preserved.

Coughlin, Bill. "The Philadelphia Zoo Marker." Historic Marker Database. October 9, 2012. Accessed May 30, 2016. http://www.hmdb.org/Marker.asp?Marker=60182. --- "The Solitude Marker." Historic Marker Database. October 9, 2012. Accessed May 30, 2016. http://www.hmdb.org/Marker.asp?Marker=60183. Philadelphia Zoo. "About the Zoo." Philadelphia Zoo. Accessed May 30, 2016. http://www.philadelphiazoo.org/about/AboutZoo.htm. United States History. "Philadelphia Zoo." U-S-History.com. Accessed May 30, 2016. http://www.u-s-history.com/pages/h3612.html. Visit Philadelphia. "The Philadelphia Zoo." VisitPhilly.com. Accessed May 30, 2016. http://www.visitphilly.com/museums-attractions/philadelphia/philadelphia-zoo/#sm.0000edupgmvi8e6zsqy24tuzp7731.