Land use and rezoning The land developed for National Harbor was previously Salubria Plantation, built in 1827 by Dr.
John H. Bayne. The plantation house burned down in 1981 and was offered for sale along with the surrounding land. The land was sold in 1984 and in 1994 was rezoned for mixed-use development. In the fall of 1997, the
Maryland Department of the Environment and the
Army Corps of Engineers approved new developer permits, granted for the PortAmerica project in 1988. The National Harbor proposal drew criticism for
degrading the surrounding environment. In 1999, the
Sierra Club said the project would "prevent forever the completion of the
Potomac Heritage Trail". In 2006, Peterson Companies withdrew plans to build a Target department store where the remaining plantation building, the slave quarters, still stand. in what was then
Oxon Hill, Maryland. Within months of its opening, the site discharged hundreds of thousands of gallons of untreated sewage into the Potomac River. The site around the Gaylord hotel was developed by Milton Peterson's Peterson Companies. The original plan was to spend over
$2 billion and to build from 2007 to late 2014. As of April 2016 construction was continuing and the cost was set at $4 billion. In 2010, the development was designated as its own
census-designated place separate from Oxon Hill.
The Walt Disney Company had announced that it would build a new resort hotel at National Harbor, but backed out of the project in November 2011. In 2011, Bonnie Bick, a member of the Campaign to Reinvest in the Heart of Oxon Hill suggested preserving the remaining plantation building, and making it a part of a proposed historical loop of the Potomac Heritage National Scenic Trail, as a draw for the development. On November 29, 2012, ground was broken for a
Tanger Outlets shopping facility a mile east of the National Harbor waterfront, which opened in November 2013. The Capital Wheel
ferris wheel opened in the mid-year of 2014. An
MGM-branded
casino, called
MGM National Harbor, opened at National Harbor on December 8, 2016, four years after voters approved the expansion of gambling in the state. It was built on the south side of the
Beltway, about a mile northeast of the National Harbor waterfront. On January 12, 2015, Peterson Companies announced that
Local Motors planned to open a showroom in National Harbor. On June 17, 2016, it opened to the public and debuted a new vehicle named Olli. Housed in the former site of the children's museum, the showroom includes interactive
STEM labs for children and a shop that sells company merchandise. On October 21, 2023,
Titanic: The Exhibition, a museum in National Harbor, was opened to the public. It features sculptures, models, and artifacts from the
RMS Titanic. ==Facilities==