Astronauts Mike Fincke, left, and Greg Chamitoff, make their way along the P3 Truss on the International Space Station as they wrap up the fourth spacewalk Friday. (AP)

Astronauts Gregory Chamitoff and Mike Fincke completed construction of the International Space Station Friday, the AP reported, becoming the last two spacewalkers from NASA’s shuttle program. All future spacewalks will be made by those who live full-time at the space station.

“Twelve years of building and 15 countries and now it’s the Parthenon in the sky and hopefully the doorstep to our future. So congratulations everybody on assembly complete,” Chamitoff said before returning to the station.

Endeavour will leave the space station Sunday and is expected back on Earth early Wednesday. Atlantis will make the final shuttle voyage this July.

Watch Chamitoff and Fincke’s final spacewalk below: