Marie writes: the ability to explore an image in 360 degrees is nothing new, but that doesn't make these pictures any less cool. In the first of a series, the Observer's architecture critic Rowan Moore introduces spectacular interactive 360-degree panoramic photographs of Britain's architectural wonders. "You are put in the middle of a space, and using your computer mouse or dragging your iPad screen - you can look in any direction you choose: up, down, sideways, diagonally, in any direction in full 360 degree turn, in three dimensions."
Go here to explore St Paul's Cathedral, London, built 1675-1711.
Marie writes: Ever since he was a boy, photographer John Hallmén has been fascinated by insects. And he's become well-known for photographing the creatures he finds in the Nackareservatet nature reserve not far from his home in Stockholm, Sweden. Hallmén uses various methods to capture his subjects and the results are remarkable. Bugs can be creepy, to be sure, but they can also be astonishingly beautiful...
Blue Damsel Fly [click to enlarge photos]