In this paper, we demonstrate a trip planning system called TISP, which enables users’ interactive exploration of POIs and trajectories in their incremental trip planning. At the back end, TISP is able to support seven types of common queries over spatial-only, spatial-textual and textual-only data, based on our proposed unified indexing and search paradigm. At the front end, we propose novel visualization designs to present the result of different types of queries; our user-friendly interaction designs allow users to construct further queries without inputting any text.