Observations of Titan’s polar regions reveal hydrocarbon lakes with morphologies and scales similar to terrestrial counterparts. The global distribution, topography, and seasonal variability of these lacustrine features are used to study volatile transport in Titan’s hydrologic cycle. This seminar will review recent observations made by the Cassini RADAR and discuss the constraints they place on the nature of the lakes, their role in Titan's methane cycle, and their evolution over both seasonal and orbital timescales.