playing room that houses the clavier, or keyboard, that controls the bells. The bells are stationary, only the clappers move to sound them. The sixth floor is a studio for the carillonneur. Recitals are given daily. The tower's interior is not generally open to the public. The first floor was Edward W. Bok's study, and is now called the Founder's Room. The second floor houses the Chao Research Center Archives, a collection of institutional records related to the tower. The third floor contains (now empty) water tanks, and the fourth floor is a work room. The fifth floor houses the Anton Brees Carillon Library, said to be the largest library of carillon music in the world. Bok Exedra In appreciation for Edward W. Bok's extraordinary gift of the gardens and tower to the nation, a group of his neighbors from Mountain Lake, Florida commissioned an exedra, or curving bench, in his honor, in 1930. This was created using the same pink and gray marble as the Singing Tower, and installed north of the tower. One of its bronze plaques reads: In 2022, Bok Tower Gardens received a matching grant of $500,000 from the Save America's Treasures program. While much of it was for landscaping restoration, a portion was to be used for "restoration and conservation of the Exedra water fountain". Pinewood Estate/El Retiro The Pinewood Estate comprises of the gardens, and features a twenty-room Mediterranean Revival mansion. This was built, 1930-1932, as a winter residence by C. Austin Buck, vice-president of the Bethlehem Steel Company, in Pennsylvania. The mansion's former name was "El Retiro," and it has been restored to its 1930s appearance. The El Retiro name is the one used for the estate as of 2023. Bok Tower Gardens hosts several events at the mansion during the year. The estate was entered into the National Register of Historic Places in December 1985. Guided tours of the mansion are given daily. Pine Ridge Trail The Pine Ridge Nature Preserve and Trail is an ecosystem typified by an over-story of Longleaf Pine, sandhill habitats, and a dense ground cover of perennial grasses that includes a nature trail that begins at the Window by the Pond and extends for three-quarters of a mile ending at the Visitor Center. The trail is located on one of the highest points in peninsular Florida at above sea level. Long ago the Lake Wales Ridge was