In this paper, we describe a research project under planning, called a Tea-Time Museum, that aims at an exploration of a new environment for content browsing and multi-user collaboration based on contents. Tea (currently, Croquet) is a next generation collaborative 3D user environment proposed by D.P.Reed, D.A.Smith, A.Raab and A.C.Kay[1][2]. Although Croquet is implemented as a collaborative 3D environment for users, some new constructs, such as the notion of portals are considered to be key technologies for constructing the next generation digital libraries. In this paper, we provide our interpretations of Croquet constructs from the view point of hypermedia processing, which will be useful to use Croquet as a basis for constructing a new method of content browsing/searching and a new collaborative (social) search based on Web content.