Denshi Jisho — Online Japanese dictionary

Found 4 sentences.

参観者クラス1つ質問をした The visitor asked the class a question.
参観者動物えさやっていけない Visitors may not feed the animals.
博物館参観者ほとんどいなかった Visitors were few at the museum.
博物館参観者ちらほら外人見えた There was a sprinkling of foreigners among the visitors in the museum.