The Prague astronomical clock, or Prague orloj, is a medieval astronomical clock located in Prague, the capital of the Czech Republic. The clock was first installed in 1410, making it the third-oldest astronomical clock in the world and the oldest one still working.

Joe Bagley is a paper artist who lives in Boston. All of his designs are original works, and each is cut by hand. No lasers, dies, or prints!

Johnson Cheung-shing Tsang is a Hong Kong sculptor specializing in ceramics, stainless steel sculpture and public artworks. Tsang’s works mostly employ realist sculptural techniques with a surrealist imagination, integrating the two elements, human beings and objects, into creative themes.

Alexander Rommel, aka evergreenarts, is a really talented German Illustrator. His works are very colorful and the lighting is incredible. He mainly focus on the sky, the sun, the water, the wind and the feeling of freedom. His illustrations seem to come directly from dreams.

3D interactive artist Joe Hill poses with one of his works as part of the VisitBritain tourism campaign at Circular Quay on September 6, 2011 in Sydney, Australia. (Photo by Mark Metcalfe/Getty Images)