1900 K Street

The Embassy of Uruguay in Washington, D.C., is the diplomatic mission of Uruguay to the United States. The embassy also operates Consulates-General in Miami, New York City and San Francisco.

Sholl's Colonial Cafeteria, was a 20th-century Washington, D.C. cafeteria-style restaurant that was famous for its popularity among tourists and government workers. The restaurant served everyone from United States presidents to the homeless. It closed its doors on December 1, 2001, due to rent increases combined with a sudden drop in local tourism that year based on fear of terrorism.

The National Association for Biomedical Research (NABR) is an American nonprofit organization, 501(c)(6), located in Washington, DC. NABR was formed in 1985 when the Association of Biomedical Research merged with the National Society for Medical Research The NABR advocates for the continued use of animals in biomedical research albeit in as humane a manner as possible.

The Independent Women's Forum (IWF) is a conservative American non-profit organization focused on economic policy issues of concern to women. IWF was founded by activist Rosalie Silberman to promote a "conservative alternative to feminist tenets" following the controversial Supreme Court nomination of Clarence Thomas in 1992. IWF's sister organization is the Independent Women's Voice (IWV), a 501(c)(4) organization. The group advocates "equity feminism," a term first used by IWF author Christina Hoff Sommers to distinguish "traditional, classically liberal, humanistic feminism" from "gender feminism", which she claims opposes gender roles as well as patriarchy. According to Sommers, the gender feminist view is "the prevailing ideology among contemporary feminist philosophers and leaders" and "thrives on the myth that American women are the oppressed 'second sex.'" Sommers' equity feminism has been described as anti-feminist by critics.

1875 K Street is a mid-rise office building located in the United States capital of Washington, D.C. The building began construction in 2000, and was completed in 2001. Upon completion, the building rose to 155 feet (47 m), featuring 12 floors and 5 elevators. The architect of the building was Hartman-Cox Architects, who designed the postmodern design of the building. The building was sold to Shorenstein Properties in 2005 for $113 million.Law firm Willkie Farr & Gallagher is the anchor tenant in the building. Foley Hoag also has its Washington office in this building, There also was a Così restaurant located in the building, which was replaced by a Protein Bar in 2014.

Americans Elect was a political organization in the United States known primarily for its efforts to stage a national online primary for the 2012 US Presidential Election. Although it was successful in obtaining signatures to get on the ballot in a majority of states, the process set up by the organization did not select a candidate.

The Embassy of Mexico in Washington, D.C. houses the diplomatic mission from Mexico to the United States.

The Seven Buildings were seven townhouses constructed on the northwest corner of Pennsylvania Avenue NW and 19th Street NW in Washington, D.C., in 1796. They were some of the earliest residential structures built in the city. One of the Seven Buildings was the presidential home of President James Madison and his wife, Dolley, after the burning of the White House in 1814, and later the residence of Martin Van Buren shortly before and after his inauguration as president. Most of the buildings were demolished in 1959. The facades of two buildings were incorporated into the Embassy of Mexico in 1986.

The Patient-Centered Outcomes Research Institute (PCORI) is a United States-based non-profit institute created through the 2010 Patient Protection and Affordable Care Act. It is a government-sponsored organization charged with funding comparative effectiveness research that assists consumers, clinicians, purchasers, and policy makers to make informed decisions intended to improve health care at both the individual and population levels, according to the Institute of Medicine. Medicare considers the Institute's research in determining what sorts of therapies it will cover, although the institute's authorizing legislation set certain limits on uses of the research by federal health agencies.

The Center for Strategic and International Studies (CSIS) is an American think tank based in Washington, D.C. CSIS was founded as the Center for Strategic and International Studies of Georgetown University in 1962. The center conducts policy studies and strategic analyses of political, economic and security issues throughout the world, with a specific focus on issues concerning international relations, trade, technology, finance, energy and geostrategy.In the University of Pennsylvania's 2019 Global Go To Think Tanks Report, CSIS is ranked the number one think tank in the United States across all fields, the "Top Defense and National Security Think Tank" in the world, and the 4th best think tank in the world overall. CSIS has been named the number one think tank for Defense and National Security for the past seven years, and has been declared the 'Center of Excellence'.Since its founding, CSIS "has been dedicated to finding ways to sustain American prominence and prosperity as a force for good in the world", according to its website. CSIS is officially a bipartisan think tank with scholars that represent varying points of view across the political spectrum. The think tank is known for inviting well-known foreign policy and public service officials from the U.S. Congress and the executive branch, including those affiliated with either the Democratic or the Republican Party as well as foreign officials of varying political backgrounds. It has been labeled a "centrist" think tank by U.S. News & World Report.The center hosts the Statesmen's Forum, a bipartisan venue for international leaders to present their views. Past speakers have included UN Secretary General Ban Ki Moon and National Security Advisor Tom Donilon. The center also conducts the CSIS-Schieffer School Dialogues, a series of discussions hosted by Bob Schieffer, of CBS News, in addition to the Global Security Forum, with keynote addresses by Defense Department officials including former Secretary of Defense Chuck Hagel.

The Washington Institute for Near East Policy (WINEP or TWI, also known simply as The Washington Institute) is a pro-Israel American think tank based in Washington, D.C., focused on the foreign policy of the United States in the Near East. WINEP was established in 1985 with the support of the American Israel Public Affairs Committee (AIPAC) and the funding of many AIPAC donors, in order to provide higher quality research than AIPAC's publications. John Mearsheimer and Stephen Walt described WINEP as "part of the core" of the Israel lobby in the United States.

Gen. Robert MacFeely House is a historic residence located at 2015 I St., Northwest, Washington, D.C. The house was built around 1860 and was altered between 1881 and 1929. It has been listed on the District of Columbia Inventory of Historic Sites since 1983 and it was listed on the National Register of Historic Places in 1989. The building now serves the Arts Club of Washington.