We might be stuck in a tab!
This list of cities is supposed to open in a narrow index window like the picture below. That lets you view the results on the right while being able to easily flip through cities using the "Next" button here. However, it seems like we've either opened in a tab instead of a popup window, or this window has been resized.
We suggest dragging this list of cities into a new, narrow window so it looks like the image below. Then click on the "Next" button to view the first city. Or even better, click here to learn how to have them open that way automatically.