Iceland is not building this temple, its actually a group of people who call themselves Ásatrúarfélagið.

This will be a High temple, the only one in the world, since the last one who was built in Upsala Sweden in 1070.

Here you can see what it will look like.
[link to www.mbl.is]

The sun and the numbers 9 and 432000 inspire the design of the building, as they are sacred according to the religion.

Actually, if you read the Eddas, the core literature in the religion, you will see lots Christianity in them.

Like Sólarljóð for example.
[link to www.germanicmythology.com]