Wissahickon Environmental Center- Tree House

Wissahickon Environmental Center- Tree House The Wissahickon Environmental Center is part of Philadelphia Parks and Recreation. It is located at the northern end of the Wissahickon Valley Park.

We provide a range of programming for school groups and the public.
The Wissahickon Environmental Center provides environmental education to families throughout Philadelphia, offering public and school programming. As park of Philadelphia Parks and Recreation, we also "advance the prosperity of our city and the progress of her people through intentional and sustained stewardship of publ

ic land and waterways as well as through safe, stimulating recreation, environmental and cultural centers. We help Philadelphia and its citizens grow by connecting people to the natural world, to each other, and to fun, physical and social opportunities." Any use of any part of the Tree House, Andorra Natural Area, Wissahickon, or the Fairmount Park System requires a permit. [email protected] for details.

Luna moth on the Tree House composting toilet building!
05/19/2026

Luna moth on the Tree House composting toilet building!

Look for the beautiful flowers of the Tulip Poplar tree for the next few weeks! The tree is tall, but the flowers fall ...
05/14/2026

Look for the beautiful flowers of the Tulip Poplar tree for the next few weeks! The tree is tall, but the flowers fall to the ground on a windy day.

These are some very old trees that we looked at on our recent Tree ID Walk. Note that they were labelled in 1979 when t...
05/14/2026

These are some very old trees that we looked at on our recent Tree ID Walk. Note that they were labelled in 1979 when the Andorra Natural Area was first added to Wissahickon Park. There is something special about standing under a tree older than 300 years! The Tulip Poplar is now 372 years old, meaning it started growing in 1654. The Lenape people populated eastern Pennsylvania at this time. The first settlers to arrive in Pennsylvania were the Swedes in 1643. William Penn arrived in 1682. Not many old-growth forest exist in Pennsylvania. Here is a list of some: https://www.oldgrowthforest.net/pennsylvania

Some photos from our recent Mushroom walk with Beth from the Philadelphia Mycology Club. She explained that most mushro...
05/14/2026

Some photos from our recent Mushroom walk with Beth from the Philadelphia Mycology Club. She explained that most mushrooms we find in mid-spring are "saprophytic"--they are living on dead wood or organic material and decomposing it. We saw many varieties. Join us for another walk this summer.

TIME CHANGE!The Gear Swap is not from 1-4PM.
05/13/2026

TIME CHANGE!
The Gear Swap is not from 1-4PM.

1st annual Philly Outdoor Gear Swap at Wissahickon Environmental Center on June 6th, 1 to 4pm
05/12/2026

1st annual Philly Outdoor Gear Swap at Wissahickon Environmental Center on June 6th, 1 to 4pm

Cottontail bunny on the Yellow Trail
05/08/2026

Cottontail bunny on the Yellow Trail

Address

300 W Northwestern Avenue
Philadelphia, PA
19118

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+12156859285

Website

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