If you’re in satellite view in Google Earth, and you’re far enough north, moving your cursor from left to right causes the image to partially rotate.
This is actually accurate. The closer you are to the equator, the closer a latitude is to linear within the distance displayed within the width of your browser. But, the further north you get, the more it matters that latitude is not actually a line, but rather a ring going around a globe.
Here’s an example: go check out something like Brock Island in the Canadian Arctic Archipelago. Click through the latitude and longitude at the top right, and choose Google’s satellite view. Now zoom out, and try moving your mouse left and right.
This is actually even cooler than I thought.
If you zoom out enough you can actually use this to chart great circle routes.
And, because you can adjust the position of the planet, you can adjust positioning so great circle routes appear as straight lines or arcs.
For example, I tilted it enough to see why the Titanic took the route that it did: a great circle from Queenstown almost all the way to Newfoundland.