[5] The church of St John the Evangelist was built in 1822–1825, at first as a chapel of ease; the chancel was added in 1871 to designs of J. P. Seddon, with coloured brick to the interior.

Dated to 1650 by leading authority Stanley Freese, Lacey Green windmill is the oldest surviving smock mill in England[9] and was restored in the 1970s, from a state of almost total collapse, by volunteers under the auspices of the Chiltern Society.

The octagonal structure has a brick base carrying a weatherboarded timber frame; the sails are modern but the machinery is largely original.

[10] Though it is widely believed that the mill was originally sited in nearby Chesham and moved to Lacey Green in 1821, no primary sources have been found to substantiate this and the Chiltern Society has been unable to trace the story beyond 1932.

[11] A somewhat speculative theory to perhaps explain the story's origin has been advanced by Michael Highfield, author of the Chiltern Society's guide to the mill.