Chanticleer, the main house, April 2007
|Location||786 Church Road in Wayne, Pennsylvania|
|Area||48 acres (19 ha)|
|Architect||Zantzinger, Borie and Medary|
|Architectural style||Colonial Revival, Colonial, Pastoral|
|NRHP reference #||84003350|
|Added to NRHP||July 24, 1984|
Chanticleer Garden is a forty-eight-acre botanical garden built on the grounds of the Rosengarten estate at 786 Church Road in Wayne, Pennsylvania. Located on Philadelphia's historic Main Line, Chanticleer retains a domestic scale and is welcoming to visitors for relaxation, walking, and picnics. The grounds became open to the public in 1993. Visitors are welcome to tour the estate seasonally, from April through October. The house and grounds were added to the National Register of Historic Places in 1984.
The estate was built in 1912 as a summer cottage for Christine Penrose and Adolph G. Rosengarten, Sr. Adolf was the head of Rosengarten & Sons, a Philadelphia pharmaceutical manufacturer that his family had founded in 1822 to produce quinine. The company later merged with Merck & Co in 1927.  Upon inheriting the estate, their son, Adolph G. Rosengarten, Jr. established a foundation to ensure that Chanticleer would be developed as a public garden.
The name Chanticleer is derived from the French word for rooster, "chanticleer" . The entrance gate is crested with carved stone rooster and other references to roosters can be found throughout the estate. Adolph G. Rosengarten, Jr. hired Christopher Woods, a native of Britain, to develop the garden. After Rosengarten, Jr.'s death in 1990, Woods became the founding Executive Director and began a radical revision of the garden. He tore down Mr. Rosengarten's stone house to create what is now known as "The Ruin". 
- Teacup Garden
- Entry Gardens
- Tennis Court Garden
- Chanticleer House
- Asian Woods
- Pond Garden
- Stream Garden
- Minder Woods,
- "The Ruin"
- Gravel Garden
- Cutting Garden
- Parking Lot Garden
|Wikimedia Commons has media related to Chanticleer Garden.|
- National Park Service (2009-03-13). "National Register Information System". National Register of Historic Places. National Park Service.
- Jacki Lyden, Chanticleer: A Botanical Distraction From Daily Life, National Public Radio, June 17, 2012.
- Higgins, Adrian; Cardillo, Rob (2011). Chanticleer: A Pleasure Garden. University of Pennsylvania Press. pp. 192 pages.
- Carl E. Doebley, 1984, NRHP Nomination Form for Chanticleer Enter "public" for ID and "public" for password to access the site.
- Michael A. Flannery, Civil War Pharmacy: A History of Drugs, Drug Supply and Provision, and Therapeutics for the Union and Confederacy; published by The Haworth Press, Binghamton, New York 2004
- Chanticleer Garden: a history Archived September 16, 2009, at the Wayback Machine.
- Chanticleer, a review by The Longwood Graduate Program, Public Horticulture, University of Delaware, 2007 Archived May 19, 2011, at the Wayback Machine.