May 11 (UPI) -- A nonprofit organization filed a lawsuit against the Trump administration Monday over renovating the Lincoln Memorial Reflecting Pool.

The lawsuit, filed by the Cultural Landscape Foundation and founder Charles Birnbaum, argues that the National Mall renovation violates environmental and preservation laws without proper authority by changing the "historic character" of the reflecting pool.

"The dark grey, achromatic basin was not incidental to the design," the lawsuit reads. "It was the design."

The lawsuit seeks a preliminary injunction to block the renovation from moving forward.

The National Historic Preservation Act, the main law cited in the lawsuit, requires a review process before changing historic properties like the reflecting pool.