The Fort Knox depository has only opened its doors to non-authorized personnel on three occasions: In 1943 for President Franklin D. Roosevelt, in 1974 for 10 Congress members to break down "cobwebs" to "re-assur[e] the public that their gold is intact and safe" and in 2017 for a delegation including Sen. Mitch McConnell, R. Ky., and then-Treasury Secretary Steven Mnuchin. "It is freakishly well secured," then-Gov. Matt Bevin, R. Ky., said after visiting the Fort Knox depository in 2017. "The gold is safe," Bevin added.

In an interview, McConnell said he could not say much about the visit for security reasons. But Bevin, speaking on WHAS radio, divulged a few more details. He said it took "quite a bit of time" to get in and out of the facility, and said officials had to cut a seal to open the vault for them.

In addition to the gold bricks, Bevin said he got to hold a 1933 double eagle, a $20 gold coin that was never circulated. Bevin, who said he collected coins as a child, compared it to "seeing a leprechaun on a unicorn."

"All I will say is that it is freakishly well secured," he said. "The gold is safe."