Its good to start with a clean blank page.
The legend of heaven is not totally lost, but in our day and culture unknown, even by those who profess to believe in it.
So here are a few features that are common from those legends that take the physical point of view;
heaven is a (1) city which is large enough to be called a (2) country and is also called a (3) single great mountain. Sometimes it is called a place of (4) numerous mountains, and there are (5) eight mountains at the pinnacle. Another common feature mentioned is a (6) single street or main highway paved with gold. Christians often talk about streets - plural, of gold, but some south American legends only mention a single golden street. Also the original Christian Bible only mentions a single street of gold. In regards to gold, the ground in the northern sector of heaven has a high quantity of gold, exposed by the paths and rivers (legend from India) This could validate the idea of multiple streets of gold.
In regards to the myth of hell, it is as common as the legend of heaven, but generally linked with the mythical views, rather than the physical opinion. The concept of hell is also more prevalent with civilizations, and rare among tribes people who tend to equate heaven with physical realities, such as the earth, planets and stars.