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Photo: AgnosticPreachersKid, CC BY-SA 3.0 via Wikimedia Commons
Nonpartisan foreign policy think tank.
The Carnegie Endowment for International Peace (CEIP) is a nonpartisan international affairs think tank headquartered in Washington, D.C., with operations in Europe, South Asia, East Asia, and the Middle East, as well as the United States. Founded in 1910 by Andrew Carnegie, the organization describes itself as being dedicated to advancing cooperation between countries, reducing global conflict, and promoting active international engagement between the United States and countries around the world. It engages leaders from multiple sectors and across the political spectrum, and has built a network of 170 scholars in Asia, the Middle East, Europe, India, and the United States.
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Small theatre offering new and classic plays and musicals.
Competing with the Smithsonian for top castle status in the District is the Victorian mansion of Christian Heurich, who immigrated to the states from Germany to become a wildly successful real estate baron and brewer. He also holds the title of world's oldest brewer, having kept up his work until his death at a ripe age of 102. It's a striking example of Victorian architecture and design, and even if you don't make it to a tour, there's a nice Victorian garden in the back open to the public M-F 10AM-4PM, spring-fall.
Small museum with exhibits depicting the contributions made by American Jews in the United States military. Includes artifacts (e.g. medals) and several videos.
Establishment think tank with focus on foreign policy security issues.