Aerial tours often involve multitasking pilots, tricky aircraft and fewer regulations compared to planes. But helicopter tour experts say many safeguards help protect pilots and passengers.

From the architectural grandeur of New York City to the untamed wilderness of Greenland, these photographs remind us of the power of a single image to transport, inspire, and provoke thought.

A sightseeing tour turned to tragedy in New York City and has raised questions about the safety of helicopter tourism across ...