One of a series of stereoscopic spherical panoramas of the bridges in Phildelphia's Wissahickon Park.  This is one of the older ones, built long before the park was established, when today's Forbidden Drive was a busy industrial road.

One of a series of stereoscopic spherical views of the bridges in Philadelphia's Wissahickon Valley Park.  This nearly 200 year old stone bridge carries a lot of automotive traffic.  It is slated for repairs and restoration in 2004-2005.

One of a series of stereoscopic spherical views of the bridges in Philadelphia's Wissahickon Valley Park. This one shows the two bridges nearest the Wissahickon's confluence with the Schuylkill River:  the Ridge Avenue highway bridge, and the gran...

One of a series of stereoscopic spherical views of the bridges in Philadelphia's Wissahickon Valley Park. There are 3 bridges in this view: an old, nameless stone bridge, the new streel bridge that carries the Wissahickon Valley Trail across the c...

One of a series of stereoscopic spherical views of the bridges in Philadelphia's Wissahickon Valley Park.  Read about the Blue Stone Bridge here.

One of a series of stereoscopic spherical views of the bridges in Philadelphia's Wissahickon Valley Park.  For a brief period in 1908-1909, the Walnut Lane Bridge was the highest and longest concrete span in the world.  Four men are said to have d...

One of a series of stereoscopic spherical views of the bridges in Philadelphia's Wissahickon Valley Park. This one one, erected in 1987, spans a perilous small ravine high above the creek.  It was designed by sculptor Jody Pinto, inspired by Miche...

One of a series of stereoscopic spherical views of the bridges in Philadelphia's Wissahickon Valley Park. This is the one farthest upstream, between The Morris Arboretum and Chestnut Hill College.  It was built early in the 21st century to replace...