Philadelphia Zoo celebrates 150 years

A large, metallic sign for the "Philadelphia Zoo." The word "ZOO" is prominently displayed in capital letters, with the silhouette of a big cat (likely a lion or tiger) integrated into the "OO." The sign is situated in a landscaped area with green trees

The Philadelphia Zoo has been a staple in the city and a leader in animal conservation for well over a century. How long exactly? As of July 1, America’s first Zoo will turn 150 years old. And the Philadelphia Zoo has grand plans to celebrate the milestone.

When the Philadelphia Zoo first opened its doors in 1874, it welcomed 3,000 guests to what was then a brand new experience. Since then, it has proven to be a timeless excursion and has now welcomed more than 100 million people onto its grounds. To commemorate that rich history and in appreciation of those who have contributed and supported the Zoo over these many years, the Zoo is hosting a celebration that begins this week and runs through July.