Morris Arboretum

Morris Arboretum

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Untitled (After Black Forest)

Creator: Robinson Fredenthal (American, 1940 - 2009)
Gift of Bart and Carol Lippincott

This monumental sculpture, one of many polyhedral explorations, is a gift to Morris Arboretum from Bart and Carol Lippincott, longtime Arboretum friends and supporters who commissioned the work and displayed it in their garden in Chestnut Hill for many years. The original and larger version sits on the University of Pennsylvania campus at 34th and Walnut Streets.

Robin Fredenthal was born in Claremont, New Hampshire in 1940, the son and brother of artists. He received a Bachelor of Arts degree from the University of Pennsylvania in 1963 and a second Bachelor's degree in Architecture in 1967. At that time, Penn Design was under the visionary leadership and guidance of Louis I. Kahn, Robert Le Ricolais, Romaldo Giurgola, Carlos Vallhonrat, Robert Venturi and others. In addition to pursuing his own studies, Fredenthal created many models for building competitions that helped to establish the renown of his talented teachers. Many of his studies, scale models and papers are held at the Penn Archives.

Untitled (after Black Forest) is one of the artist's myriad studies of cubes and of what happens when he stands them on their corners, cuts through them with planes, rotates and stacks them. Viewed from different angles in the Arboretum's Azalea Meadow, the piece will inspire interest and lively discussion.

This piece was fabricated and installed by Sears Ironworks, a company that has created and installed many Fredenthal pieces. We are indeed lucky to have it in the garden.

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Alerts & Updates

COVID-19 Response

In response to the unprecedented public health crisis related to Coronavirus (COVID-19), Morris Arboretum will close to the public as of March 14, 2020 until the University of Pennsylvania feels that is it safe to re-open. Learn more about the Univerisity's response on the University of Pennsylvania’s dedicated Coronavirus website: Please know that this decision was made after careful deliberation and that our priority is to do all we can to ensure the safety and well being of our staff, volunteers, and visitors. Information pertaining to public health is rapidly evolving and, as such, it is not yet known when we will reopen. We will be vigilant in our efforts to keep our website up-to-date and we will communicate directly to members and class registrants via email with the latest details.

The following information is provided in anticipation of some of the questions you may have relative to the following categories:

Individuals who have registered for a class
It is our intention to provide a refund to individuals who have registered for a class that occurs during this temporary closure. We are working as quickly as possible to process your refunds in the manner in which you paid. If you have questions, please contact

Annual Membership
We appreciate your patience at this time. We know that early spring is the most natural time to come out to the Arboretum for a walk in the gardens to enjoy the fresh air, but maintaining public health must be our priority. We look forward to seeing you in the gardens just as soon as we are reassured that it is safe for all of our visitors to return. We will keep you updated on any developments, but in the meantime, if you have any questions about your membership, please contact

Planned Events
Any individuals that have planned events will receive outreach directly from a staff member to discuss your options.

We will continue to update the community as soon as information is available and is consistent with the evolution of this dynamic situation. Questions may be directed to

We appreciate your understanding during these challenging times and we thank you for your support. Please stay connected with us through Facebook, Instagram, and our website.

Center for Disease Control (CDC):
University of Pennsylvania’s dedicated Coronavirus website:

Unfortunately, Out on a Limb will be closed on Wednesday, January 29th through Friday, January 31, 2020 due to scheduled maintenance.

The Garden Railway will not be operational from 2:00 PM Friday (July 19) through the weekend (July 20-21). The trains will open for normal operation on Monday, July 22nd. Our Train Master reported that the trains will not operate in the excessive heat, citing electrical, track and rolling stock failures.

The Arboretum is open as usual. Click here for hours.

Garden Railway trains are not running Saturday, September 8th and Sunday, September 9th due to inclement weather.

Please note: The Rose Garden is closed for maintenance every Thursday morning until noon.

Weather conditions may limit garden access to certain features even if the garden is open – please check the web site or call (215) 247-5777 for updates before visiting. Our visitors’ safety in the garden is our top priority. Therefore when inclement weather is predicted, we will make decisions about closing the garden accordingly.