Search for labyrinth directories on the Internet using the search term "labyrinth locator." Most directories list by state and alphabetical within state. Some, such as the New England-centered labyrinthguild.org, provide photos and contact information.
Ask a labyrinth builder, findable by searching "labyrinth builders." Specialists in labyrinth design and construction should be willing to tell you or email you any of their projects near your location, including ones that may not be listed in the directories. Some builders have websites with location lists. Look for menu selections such as "work history" or "projects gallery."
Contact churches, colleges and assisted living centers in your area, as many of these organizations either have a labyrinth on site or will be able to direct you to a location that does.
Buy a labyrinth. That's a stretch on the definition of "find," but if you have your own, you will always be able to find it! Labyrinth Company and Labyrinth Enterprises are two examples of sellers of canvas labyrinths that can be rolled up and stored when not in use. Prices range from $1,000 to $6,000, depending on design and size. Permanent installations can start at $5,000 and reach well into six figures depending on materials and size.