

週末、古い城を見に行きます。
あの城はいつ建てられましたか。
城の中では写真をとらないでください。
"しろ(城)" is in the lesson "Middle ages" (Level 30), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.