Last year, President Obama held the first ever "Maker Faire" at the White House.
This year, it grew into a national affair, bringing together creators from all across the country.
It turned into a space full of creators and innovators.
Matthew Bramlet, Assistant Professor of Pediatrics University of Illinois, said, "It's been phenomenal the way this has be impacting our field specifically."
Bramlet and his team created 3-D printed, pre-surgical medical simulators to help doctors practice surgeries before they happen.
They said it's improving medicine and saving lives.
Bramlet said, "We had a baby with congenital heart disease, and when the surgeon looked inside he was able to recognize something that the images did not pick up very well, and in doing so, it transformed the surgery. We had several where it actually changed the surgery."
Everything from life saving technology, underwater robots and lego creations of America could be found at the big event.
Megan Smith, U.S. Chief Technology Officer, said, "Making or tinkering is so important as a skill-set for our country. It's always been part of the American ethos from Henry Ford and Clara Barton, to Steve Jobs and Steve Wasniak with their bigger boards."
Dale Dougherty, founder of Maker Faire, said, "You know what's really cool, is that these people are in our community and we don't always recognize them or celebrate them, what they do, what they make, and this just gives the context for people to come out and see that, and I hope it gets them to think about, 'Well, I can do something, you know, I would like to learn how to do that."
National Maker Week runs until June 18th.