会館【かいかん】
meeting hall, assembly hall
館長【かんちょう】
superintendent, director, curator, chief librarian
迎賓館【げいひんかん】
reception hall (esp. for visiting state dignitaries), guest house, State Guest House (esp. Akasaka palace, also guest house in Kyoto)
公民館【こうみんかん】
public hall, community center, community centre
水族館【すいぞくかん】
aquarium
本館【ほんかん】
main building (in contrast to an annex, etc.), main building (of a multi-site library, museum, etc.)
館内【かんない】
inside a library, museum, cinema, etc., on the premises
開館【かいかん】
opening (for that day's business; of a library, museum, cinema, etc.), opening (of a new library, museum, cinema, etc.)
別館【べっかん】
annex (to a building), annexe, extension, supplementary building
休館【きゅうかん】
closure (of a library, museum, etc.)
領事館【りょうじかん】
consulate
公館【こうかん】
official residence
入館料【にゅうかんりょう】
admission fee
在外公館【ざいがいこうかん】
diplomatic mission, overseas diplomatic establishment
国立博物館【こくりつはくぶつかん】
national museum
館員【かんいん】
personnel (of public building)
新館【しんかん】
new building, annexe, annex
閉館【へいかん】
closing (for the day; of a library, museum, cinema, etc.), closing down (of a library, museum, cinema, etc.)
洋館【ようかん】
Western-style house
全館【ぜんかん】
entire building