DC by Foot writes: DC by Foot is pleased to present the only free, tip-based walking tours of Washington, DC. These interesting and informative tours will take you from the National Mall to the Memorials and beyond. It's the capital of the United States of America and a testament to the history and politics of a nation. Washington, DC will be sure to surprise and inspire you, and on every step of the way, our expert guides - part professors, part performers - will show you why. Always interesting, always intimate, we make history fun for everyone!