In Restaurant Tycoon 3, changing the world map is usually done from the game’s menu or map/restaurant selection screen, not inside the restaurant itself. A recent player discussion says you can go into in-game settings and return to the main menu , then switch to another restaurant from there.

What to try

  1. Open the settings menu in-game.
  2. Choose the option to go back to the main menu.
  1. From the menu, look for the map / restaurant selection area and pick the plot or save you want.

Why this matters

The game’s wiki says Restaurant Tycoon 3 has multiple restaurant plots on the map, and players can choose where to spawn and select from their saves when joining. That suggests the “world map” is tied to restaurant selection and spawning rather than a free camera-style map editor.

Extra note

A game guide video and a map-update video also point to the map being part of the game’s larger restaurant selection and expansion system, which fits the menu-based switching approach.

If the option you want still does not show up, the fastest workaround is usually to leave the current restaurant, return to the main menu, and choose a different plot/save from there.