The 9/11 Memorial and Museum at the World Trade Center brought in 4.5 million visitors in its first year, but the cost of running the attraction is $1 million a week, and that is after its $700 million construction cost.
On top of those costs is the museum, which is still not complete, reports the Daily Mail.
In comparison, the Gettysburg National Military Park costs $8.4 million to keep open for one year, $3.6 million is budgeted for the USS Arizona Memorial at Pearl Harbor and the Arlington National Cemetery costs $45 million every year.
Ironically, the 9/11 Memorial and Museum spends $12 million per year on private security because of terrorism fears.
The museum was supposed to open this month, but construction stopped a year ago because of funding problems.
Officials had planned to use the museum, funded with taxpayer money and private donations, as a source of income.
Visitors will be allowed into the above-ground portions of the memorial for free, but they will be charged to go underground into the museum, which will include portraits of the 9/11 victims, oral histories of the attacks and 9/11 artifacts such as the staircase in the World Trade Center.
The admission price hasn't been set, but foundation officials may charge a "suggested donation" fee.