Complex sentence: The now abandoned cluster of houses is the center of many urban legends and ghost stories, all of which are fueled by the unknown reason for the abandonment of all the houses and the huge about of personal objects left behind in the deserted buildings.
Split into simpler sentences: The now abandoned cluster of houses is the center of many urban legends and ghost stories. This has been fueled by the unknown reason for the abondonment of all the houses and the large number of personal objects left behind in the deserted buildings.