假如你叫李华，你美国学建筑的网友Jack来email询问宁波有没有有特色的古建筑，你向他回email，重点介绍了保国寺，并邀请他来宁波看看。请根据以下提示，完成100词左右的email。
1． 保国寺建于宋朝，位于宁波北，占地1.3万平方米；
2． 寺庙用木头建造，不用钉子，无鸟筑巢，无蛛织网；
3． 环境静谧，每年不少人来此一睹真容；
注意：1．可适当添加信息，使行文通顺；
2．开头结尾已给出，不计入字数
参考词汇：钉子nail，巢nest，网web
Dear Jack,
You asked about special ancient buildings in Ningbo in your last letter. Here I’d like to introduce Baoguo Temple to you.
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Yours,
Li Hua
