Old John the upper floor, and is open to visitors on the park's guided walk programmes. In 2001, Bradgate Park Trust registered the design of the building as a trademark, and in 2018 told a local artist that she would have to pay them if she continued to sell her paintings of it. Adjacent to the tower is a toposcope installed in 1953. This was installed by the people of Newtown Linford from money raised at the 1953 'Pageant of Lady Jane Grey', performed to celebrate 400 years since she was proclaimed Queen of England. Old John Tower occupies the north-eastern end
Bradgate Park altitudes. The youngest of the Precambrian rocks are the South Charnwood Diorites. These are known locally as granite, (geologically they were formerly described as markfieldite) and are quarried commercially at Groby and Markfield. These are igneous intrusions of magma which formed within the existing Beacon Hill and Bradgate Formations. They cooled slowly and at great depth to create their large crystalline structure, and were subsequently exposed by erosion of the uplifted rocks above. The Diorites are the cliffs and blocks seen along the Lin valley, through the so-called Little Matlock Gorge and near Bradgate House. They are massive blocky outcrops