It would be a home for some 7,000 families where everyone above the age of thirteen would be armed.
"You can walk into Idaho, you can find land to buy, you can find people of like mind," Miller said. "You can find a place to call home."
This video (seen below) was made at a so-called Patriots Conference in North Carolina last fall.
But it seems so far, the citadel remains just a vision on the Internet.
Rep. Cindy Agidius, (R) Moscow, represents Benewah County in the Idaho legislature.
She says word on the street is "something's coming," but she hasn't heard anything concrete and remains skeptical.
"When I look at plans for this community. It looks pretty far fetched," she said. "We're talking about building a castle basically. That's an awful lot of capital."
Efforts to reach Miller by phone were unsuccessful.
But nothing has been filed with Benewah County planning and zoning and there are no records of any land sales for the Citadel project that we could find or that anyone seemed to know of.
Benewah County Sheriff Dave Resser says he's only heard about Citadel from news reports and says he's not overly worried.
The Citadel website which has details about a walled, planned community of up to 7,000 families to be built near St. Maries in Benewah County.
To live there, every able-bodied person 13 years or older is required to "demonstrate proficiency" in handguns and rifles, according to The Citadel's website.
And every able-bodied person "of age" within The Citadel must maintain a variant of the AR-15 semi-automatic rifle "with 1,000 rounds of ammo".
Strange covenants, indeed, but The Citadel bills itself as a bastion of Jeffersonian liberty -- an armed, designated point of retreat when American society collapses.
We wanted to call The Citadel and ask them about their plans for Northern Idaho but we couldn't find a phone number. And we're not the only journalists who are interested.
The Citadel's website says, after the Sandy Hook shootings, they've been contacted by a lot of reporters. But their website says "it's too early in the evolutionary process of the Citadel Project to accept these invitations" for interviews.
The Citadel's website says 20 mountain acres have already been purchased in Benewah County for the "first wave" of residents. But we could not independently community that.
And The Citadel also plans to build its own manufacturing plant -- for firearms.