View of the Empire State Building from Top of the Rock, Original resource at http://www.publicdomainpictures.net/view-image.php?image=16166&picture=empire-state-building.

A Greek Orthodox church in Agios Georgios, Cyprus., Original resource at http://www.publicdomainpictures.net/view-image.php?image=4391&picture=greek-church.

Detail of the suspension portion of a bridge, Original resource at http://www.publicdomainpictures.net/view-image.php?image=101881&picture=strings.

London's Tower Bridge at night., Original resource at http://www.publicdomainpictures.net/view-image.php?image=8250&picture=tower-bridge-at-night.