Editing Philadelphia Zoo (section)

== History ==

=== Founding ===

The Philadelphia Zoo was established by the '''Zoological Society of Philadelphia''', which received a charter in '''1859'''. The Civil War delayed construction, and the zoo finally opened on '''July 1, 1874''', making it the '''first zoo in America'''.

Opening day facts:
* 3,000 visitors
* Admission: 25 cents for adults, 10 cents for children
* Initial collection included animals from the Smithsonian

=== Early Years ===

The zoo grew rapidly:
* Acquired rare and exotic animals
* Built distinctive Victorian-era buildings
* Became a model for zoos nationwide
* Attracted millions of visitors

=== Historic Buildings ===

Several original structures survive:
* '''Penrose Building''' (1876): Victorian animal house
* '''Solitude''' (1785): John Penn's country house (on zoo grounds)
* '''Treehouse:''' Historic building now used for education

=== Modern Era ===

The zoo has transformed from a Victorian menagerie to a modern conservation institution:
* New naturalistic habitats
* Zoo360 trail system
* Conservation breeding programs
* Education and outreach