～館
～かん · ～kan · JLPT N2 · noun
hallway
🏛️ 館 = 食 food + 官 official: the guesthouse where officials were fed
館 first meant a lodge for travelling officials, with meals included. Now it's added to a word to name a public building: 図書館 library, 美術館 art museum, 大使館 embassy. The kan sounds like can: a hall can hold a crowd.