The Kentucky Horse Park is adding 8,000 square feet of museum space to its campus in Lexington, thanks to the Purebred Arabian Horse Trust. Ground breaking for the project is expected to be April 1, and it will be the first addition to the 52,000-square-foot museum since its opening in 1978. A new Arabian Horse Gallery will include artifacts, art and other items of interest related to the Arabian horse and will be part of the additional square footage of the museum.