The John P. Holt Brentwood Library Arboretum is located within Brentwood's Concord Park, a 40 acre site at the southwest corner of the intersection       of Knox Valley Drive and Concord Road. The area was acquired by the City on April 12, 1995 for a new city library.

The Arboretum site is historic and unique. During construction of the library in 1997, remains of an ancient village dating from A.O. 1375 were discovered, and the Tennessee Division of Archaeology was called in to evaluate the site. In addition to more than 71 Native American graves, post patterns for houses, a town palisade, and numerous artifacts were found.

In 2003, the Brentwood Tree Committee added a unique tree to the Park/Library site, a sweet pecan tree, Carya illinoinensis, which was grown from a seed collected at George Washington's home at Mt. Vernon, Virginia in 2000.

A historic springhouse that provided water to the local community is also located on the property, as well as the City's Millennium Tree and Time Capsule. The property holds special meaning and historical value for citizens of Brentwood, making it an appropriate location for the establishment of a new arboretum.