entrance fee; ticket price
Used for admission fees to movies, performances, exhibitions, and similar cultural events.
The movie admission fee is 1800 yen for adults.
I paid the museum entrance fee and went inside.
観覧料 is used for viewing fees, often for sports or spectacles, whereas 鑑賞料 carries a nuance of artistic appreciation.
Compound of 鑑賞 (appreciation) and 料 (fee). The exact historical derivation is uncertain, but the word follows a common pattern for fee-related terms.