The Washington meridians are four meridians that were used as prime meridians in the United States which pass through Washington, D.C. The four that have been specified are:
- through the Capitol
- through the White House
- through the old Naval Observatory
- through the new Naval Observatory.
The Representative Office of Northern Cyprus is a representative office of the Turkish Republic of Northern Cyprus to the United States. The United States does not formally recognize the Turkish Republic of Northern Cyprus, and therefore the office is legally a commercial enterprise. The staff of the Representative Offices do not have diplomatic visas and only operate within the United States using business visas. It is located at 1667 K Street, Northwest in Washington, D.C. The Representative Office in New York City is the de facto mission of the TRNC to the United Nations Organization.
Jefferson Pier, Jefferson Stone, or the Jefferson Pier Stone, in Washington, D.C., marks the second prime meridian of the United States even though it was never officially recognized, either by presidential proclamation or by a resolution or act of Congress.
The Embassy of Mexico in Washington, D.C., houses the diplomatic mission from Mexico to the United States.
The United States and North Macedonia enjoy excellent bilateral relations.
