Admission Fee
Entrance Fee, Entry Fee
noun
The fee for entering a public building is the admission fee. Gotta pay it if you want to get inside.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
入館料はいくらですか？
How much is the admission fee?
ここの入館料は高すぎます。
The entrance fee here is too expensive.
今日は入館料はいりません。
No admission fee is required today.