Map multi-search architecture that enables users to multi task on the mapping engine website. A card interaction model enables the creation of new cards for new tasks and from which users can retrieve previous results without needing to redo the search task. One or more cards can be retrieved by scrolling through and selecting the desires card(s). Point-of-interest (POI) capabilities of the architecture introduce different POI colors, POI sizes, and a decay model which enables users to differentiate between different sets of results and furthermore, enables users to see the proximity of different sets of results. The POI system enables differentiated POI sets for different sets of search results and/or detail cards.