Walking into the National Museum of the US Air Force is to step back in time.
The $40 million hanger houses the largest collection of historical presidential aircraft anywhere.
"There is nowhere else in the world when you can see a collection of presidential aircraft," Curator Christina Douglass said.
From the first aircraft, known as the "Sacred Cow," it flew 32nd President Franklin D. Roosevelt. It took flight in 1943 and was modified with a lift to accommodate his wheel chair.
In 1947, President Harry S. Truman replaced the "Sacred Cow" with a Douglas DC-6 Liftmaster (VC-118) named "Independence" after his hometown. Its nose was painted to look like a bald eagle.
Then there's President Dwight Eisenhower's favorite flyer.
"President Eisenhower would actually fly it himself he was a pilot much to the chagrin of the security detail. Hee felt like flying," Douglass said.
This collection of 10 aircraft, four of them you can actually walk in, spans more than 70 years of presidential travel.
Glenn and Michele Jensen drove in from South Bend, Indiana.
"It really is phenomenal unless our friend didn't tell us I would never know it was here," Michelle said.
The tour allows you to see the evolution of the aircraft. From spartan like accommodations to plush leather seating.
As presidents realized the importance of safer, faster travel to allow them to meet face to face with world leaders the planes grew in size and wing span. The collection is as close to the presidential entourage most Americans will ever get.
The truth is any plane a president is flown adopts the call sign Air Force One and that plane becomes the most recognized, well-maintained plane in the world.
The star of museum of is SAM 2-6000. The VC-137C was used by eight presidents including Kennedy, Johnson, Nixon, Ford, Carter, Reagan, George H.W. Bush and Clinton.
It's inside this plane where Lyndon Johnson took the oath of office; the only president to do so inside Air Force One after the assignation of John F Kennedy.
It's also the plane that carried Kennedy's coffin. They needed to remove a wall and seats to get the coffin in. His wife Jackie sat across from him.
The museum said 850,270 people toured the museum last year, which is free to the public.
The air force museum is hoping to be the home of the current Air Force One when it's retired in a decade.
The National Museum of the U.S. Air Force will temporarily close Air Force One (SAM 26000) from Jan. 23-Feb. 3, 2017, in order to complete a lighting upgrade with new LED lights and other conservation work.
To view the museum's presidential collection online, click here.