A depot in Imperialism is a structure that collects resources from its own tile and the six adjoining (except water areas), for despatch to the capital if there is a railroad link.

A depot costs $2,000 and can be built by an engineer, in three turns, on any tile that is currently available for railroad construction except one that adjoins another depot or a port.

Imperialism 2 has no corresponding feature: there every road collects in the same way as a depot does.