On the hill above stands Huntley, a Federal-style villa built about 1825 for Thomson F. Mason, a grandson of George Mason of Gunston Hall. Thomson Mason, a prominent Alexandria lawyer, served on the city council, as mayor, and also as president of both the Little River Turnpike and Alexandria Canal companies. The thousand-acre Huntley property stretched across the valley below. Remaining dependencies include a subterranean icehouse with a vaulted ceiling, and a combination privy and storage building. The author of Huntley's unusual design remains unknown, but the house has been attributed to Benjamin H. Latrobe or George Hadfield, two notable early architects.