President Donald Trump visited North Dakota on Wednesday to see the newly built Theodore Roosevelt Presidential Library, a massive facility exploring the life of America’s 26th president, built in the rugged, lonely landscape where Roosevelt built his conservation values in the 1880s.

During a tour of the 96,000-square-foot library and in a speech afterward, Trump spoke admiringly of Roosevelt and compared himself favorably to the former president, who he described as the embodiment of the American spirit, praising his toughness as a leader and outdoorsman.

“He had a freakin’ wild life,” Trump told an audience at a Western-themed amphitheater. “He didn’t want to be quiet. He wanted to be great.”

The official opening of the library on Saturday coincides with July 4th celebrations honoring the 250th anniversary of the signing of the Declaration of Independence.

Trump made the trip to see the $450 million project aboard his new Air Force One, a Boeing 747 given to the United States by Qatar. The visit was a boost for Interior Secretary Doug Burgum, a former governor of North Dakota, while also bringing the nation’s birthday festivities to a region synonymous with its westward expansion.