Blue bridge, St. Petersburg | Vitaly Shchukin
"I even got the direct email to [Iran's] minister of tourism, but got no response," Chapple says.
Over the course of two days, he scoped out an area tucked out of sight from the police. He waited for a burst of traffic to block the noise of the drone and got his shot.
Russian authorities denied Chapple permission to fly above the Kremlin in Moscow because he was a foreign citizen. He did it anyway.
"For that year, when the whole world was open, it was just a case of hitting famous landmarks and moving as quickly as possible," he says.
For about 18 months after commercial drones hit the market, it was legal to fly drones pretty much anywhere. Chapple took advantage.
Drones also offer a huge advantage over manned aircrafts: You can afford to take risks with the weather.
And here's a slightly different shot, showing more of the church's architectural detail.
Here's one view of the Cathedral of Christ the Saviour in Moscow, on the banks of the Moskva River.