In the late 18th century, a wealthy landowner built an estate in County Antrim in what is now Northern Ireland. To make a scenic but imposing entryway, he had 150 beech trees planted on either side of the road (90 trees survive). The trees grew to form the Dark Hedges—an arboreal tunnel leading up to the property. In the right conditions—say a gloomy autumn night with the moonlight casting shadows through the tree canopy—this road can be a little spooky.