walls and staircase decorated with colorful mosaic throughout the building at pha sorn kaew, khao kor, phetchabun, thailand

walls colorful mosaic mandalas facades art floor wat pra pha sorn kaew khao kor phetchabun pillars floors temple travel asian asia ancient religion thailand tourism architecture bangkok landmark thai buddhism buddha buddhist golden palace grand building decoration emerald tourist pray pagoda statue background spirituality sky place monastery phra religious structure heritage east