This entrance consists of two double gates for carriages, with side gates for pedestrians, and from the latter, curving walls extend to the line of the avenue. The distinguishing feature is formed of two octagonal towers, one on each side of the carriage gates, about forty feet in height, with battlements built of rough-faced stone. All the masonry work of this entrance, the towers, the curving walls, and the gate-keeper's house on the north side of the drive, is of dark grey limestone; this imparts a gothic character to the whole design.   The plan is copied from the works of John Claudius Loudon, the great English author on gardening and rural architecture.

Both the King's road (the name used by Henry Shaw in 1872) entrance and its attendant gatehouse were begun in 1870. The design of both structures is now attributed to Francis Tunica, who certainly supervised their construction. Although the latter was completed in the same year, work on the entrance itself lasted into 1872. Like the south or Arsenal Street entrance, the Kingshighway entrance was enlarged before Shaw's death, presumably because the city's expansion had increased traffic even from those directions farthest removed from the heart of St. Louis. In 1879-80, only seven years after the park opened, pedestrian gates designed by George I. Barnett and Isaac Taylor were added to the Kingshighway entrance.

MacAdam noted that both the plan and elevation of the entrance lodge were derived from the Encyclopedia of Cottage, Farm and Villa Architecture first published by the Scottish landscape designer and architect John Claudius Loudon in 1833. Henry Shaw owned a copy of the London edition of 1846, and may have provided it to Francis Tunica. 1870, the date of construction, is carved above the rectangular bay window on the inside gable of this tiny Gothic Revival villa. The window itself is inscribed "TGP" (for Tower Grove Park). An escutcheon in another gable bears Henry Shaw's initials.