Many C+ + extractors exist that produce syntax trees, call graphs, and metrics from C++ code, yet few offer integrated querying, navigation, and visualization of source- code-level facts to the end-user. We present an interactive reverse engineering environment which supports reverse- engineering tasks on C/C++ code, e.g. set up the extraction process, apply user-written queries on the extracted facts, and visualize query results, much like classical forward- engineering IDEs do. We illustrate our environment with several examples of reverse-engineering analyses