Neoclassical stone monument built in 1832 in memory of the third Duke of Bridgewater who built the Bridgewater Canal and once lived in Ashridge House. Climb 172 steps to the top for stunning views across the landscape. The popular outdoor café offers an excellent range of breakfasts, lunches and home-baked cakes. Dogs & cycles welcome, extensive free parking. National Trust shop sells an excellent range of gifts, books, maps and local produce. Opening hours vary seasonally.