A few examples...

Hello people!

Following are examples for the so-called categories that we have listed:

- Pavilions
http://www.archdaily.com/236979/one-ocean-thematic-pavilion-expo-2012-soma/
http://www.archdaily.com/232967/frieze-art-fair-so-il/
http://www.archdaily.com/379822/the-old-market-square-stage-5468796-architecture/
http://www.archdaily.com/265034/porsche-pavilion-at-the-autostadt-in-wolfsburg-henn-architekten/ (I don't know whether the scale of the project suffices but overall, the experimental approach is fantastic!)

- Institutes (mainly educational)
http://www.architectural-review.com/buildings/the-gate-of-creation-tadao-andos-design-school-in-mexico/8654552.article
http://www.archdaily.com/162101/ad-classics-institut-du-monde-arabe-jean-nouvel/
http://www.archdaily.com/87728/ad-classics-dessau-bauhaus-walter-gropius/
http://www.archdaily.com/252725/tongjiang-recycled-brick-school-rufwork/
http://www.dezeen.com/2014/11/21/movie-abedian-school-architecture-crab-studio-gavin-robotham-video-interview/
http://votrongnghia.com/projects/farming-kindergarten-2/
http://www.archdaily.com/566580/farming-kindergarten-vo-trong-nghia-architects/
http://www.graftonarchitects.ie/University-Campus-UTEC-Lima
http://www.stevenholl.com/project-detail.php?id=140

- Museums
http://www.archdaily.com/123761/ad-classics-kimbell-art-museum-louis-kahn/
http://www.archdaily.com/151535/teshima-art-museum-photos-by-iwan-baan/
http://www.archdaily.com/625552/ad-classics-national-museum-of-roman-art-rafael-moneo/

These are all classic and well-known examples of the title. Update the list as and when you find something new. Cheers!