Just-for-Fun Geography:

To learn geographic coordinates of latitude and longitude, for any given city, see the website Geodatos - https://www.geodatos.net/en/

To learn what point is opposite from a given location (a straight line through the center of the globe, the antipodal point) choose the "Antipode finder" option.
Wikipedia provides background information on Antipodes:
Originally Posted By: Antipodes
...most land has its antipodes in the ocean...

Other options offered by Geodatos include:
- Distance between cities
- Distance between countries
- Population
- Countries by area (size)
- Homonymous cities (want to guess which city names are used most frequently around the world?)