The palace interior is sumptuously magnificent, leaving visitors in awe.
Tips
history
From Wen Kang's 《儿女英雄传》 (late Qing): '连忙灯下一看,只见当朝圣人出的是三个富丽堂皇的题目'. Originally applied to grand imperial examination prompts; now chiefly describes physical splendor - palaces, ballrooms, chandeliers.
usage
Typically describes buildings, interiors, ceremonies - physical grandeur. Can carry a faint note of ostentation; for simpler beauty use 华丽 or 美丽.