M&M World is a popular retail store chain owned by Mars, Inc., known for its colorful and interactive displays of M&M's candies and merchandise. Typically, M&M World locations are found in major tourist destinations, such as Las Vegas, Orlando, and London, but not in Washington, D.C.
If there have been new developments or if a specific M&M World has been established in Washington, D.C., after my last update, it's recommended to check the latest information from reliable local sources, official guides, or the M&M's official website for the most accurate and current details.
As the situation may change, it's always a good idea to verify information from local authorities or the specific business in question to ensure you have the most up-to-date details about the presence of an M&M World or any similar attraction in Washington, D.C.