Theodore Roosevelt Presidential Library opening in North Dakota Badlands

Theodore Roosevelt consistently ranks among the nation's top five most popular presidents. On this upcoming July 4 holiday, 107 years after his death, T.R. is finally getting his own presidential library – but it's not where you might think. That library is rising out of the prairie grass in the North Dakota Badlands – a 96,000-square-foot tribute to our 26th president. It's as grand as his likeness on Mt. Rushmore , except a lot more subtle, and that's by design, says architect Craig Dykers. "Nature is transformative here," he said. "It transformed Theodore Roosevelt, and it will transform new visitors to this library." The Theodore Roosevelt Presidential Library under construction in the Badlands of North Dakota. CBS News Its gently sloping roof mimics the surrounding buttes, covered in native grasses and walking paths – yes, walking paths on the roof . The hope is they'll get visitors up and out for a commanding view of Theodore Roosevelt National Park right next door. "We wanted something that just felt primitive," said Dykers. "And so, this form emerging from the Earth, it felt like it just arrived from the Earth."' Dykers said. Inside, a string of skylights will provide almost all the natural illumination the library would ever need, held up by walls made solely of compressed earth. The interior design of the skylights and earthen walls of the Theodore Roosevelt Presidential Library. …