In the past, we have shared several maps about same sex marriage in the United States and world acceptance towards homosexual, and now we have found several maps about the same sex marriage around the world in different countries.
Since the first legal same sex marriage took place in Amsterdam in 2001, there have been 15 countries (e.g. certain states in US, part of Mexico, Australian Capital territories) legalized it within these 12 years. However, there are still some countries do not accept homosexual (e.g. Sudan, Saudi Arabia, Yemen).
According to below image, it seems that homosexual is more acceptable in Europe that most of the European countries allow same sex marriage, and same sex unions are allowed.
Please note that homosexual can be punished by imprisonment in some of island countries in Oceania:
This gay marriage map can be converted into multilevel interactive map that detailed information can be added to each countries with popup infobox, and map legend can be created for indicating various region colors.
Here is a video tutorial about creating multi-level maps: