- High Bridge of Kentucky
This railway bridge - built in 1876 - was the first cantilever bridge in the U.S. This drone photo shows the bridge, its shadow, and its reflection in the Kentucky River. (May 18, 2018. DJI Mavic Pro, 1/1048s @ f/2.2, 4.73 mm, ISO 100.) - Karapiro Dam
This photo - one of two drone photos in this year's list - shows the dam that forms Lake Karapiro, over the Waikato River in New Zealand's North Island. (January 8, 2018. DJI Mavic Pro, 1/1681s @ f/2.2, 4.73 mm, ISO 100.)