Stronghold (Washington, D.C.)

McMillan Sand Filtration Site is a twenty-five acre decommissioned water treatment plant in northwest Washington, D.C., built as part of the historic McMillan Reservoir Park. It is bound on the north by Michigan Avenue, on the east by North Capitol Street, on the south by Channing Street and on the west by McMillan Drive; which runs along the edge of the reservoir, to which it was formerly attached. Two paved courts lined by regulator houses, tower-like sand bins, sand washers and the gated entrances to the underground filter cells provided a promenade for citizens taking the air in the park before it was fenced off in WWII. Below grade, there are twenty catacomb-like cells, each an acre in extent, where sand was used to filter water from the Potomac River by way of the Washington Aqueduct. The purification system was a slow sand filter design that became obsolete by the late 20th century. In 1985, a new rapid sand filter plant replaced it across First Street beside the reservoir. The treatment system is operated by the Army Corps of Engineers. Public access to the site has been restricted since World War II, when the Army erected a fence to guard against sabotage of the city's water supply. Until recently, specially arranged biannual tours were arranged for scores of visitors curious about the odd-looking structures. The site was never reopened to the public on the same basis as before the war. In 1991, the D.C. Historic Preservation Review Board designated McMillan Park a Historic Landmark and nominated the site for the National Register of Historic Places. It included the site on their "List of Most Endangered Properties in 2000" and again in 2005.

Glenwood Cemetery is a historic cemetery located at 2219 Lincoln Road NE in Washington, D.C. It is a private, secular cemetery owned and operated by The Glenwood Cemetery, Inc. Many famous people are buried in Glenwood Cemetery, and the cemetery is noted for its numerous elaborate Victorian and Art Nouveau funerary monuments. The cemetery was listed on the National Register of Historic Places in 2017; its mortuary chapel was separately listed in 1989.

Glenwood Cemetery Mortuary Chapel is a historic chapel located in Glenwood Cemetery in Northeast, Washington, D.C. It was built in 1892 in a Richardsonian Romanesque style. It was designed by Glenn Brown. The building was added to the National Register of Historic Places in 1989.

St. Mary's Cemetery (also known as the Saint Mary Mother of God German Catholic Church Cemetery and the St. Mary's German Catholic Cemetery) is a Catholic cemetery in Washington, D.C., United States, overseen by the Roman Catholic Archdiocese of Washington.

Trinity Washington University is a private university in Washington, D.C. affiliated with the Catholic Church. Trinity is a comprehensive university with five schools; the undergraduate College of Arts & Sciences maintains its original mission as a liberal arts women's college, while men attend Trinity's other schools at both the graduate and undergraduate level. The university was founded as Trinity College by the Sisters of Notre Dame de Namur in 1897 as the nation's first Catholic liberal arts college for women. Trinity was chartered by an Act of Congress on August 20, 1897. An elite institution in its early life, the college faced declining enrollment by the 1980s. It chose to begin recruiting local underprivileged students, and became predominantly black and Hispanic. Trinity became Trinity Washington University in 2004. Today, Trinity Washington University enrolls more than 1,800 students in its undergraduate and graduate programs in the College of Arts and Sciences, School of Nursing and Health Professions, School of Education, School of Business and Graduate Studies and School of Professional Studies. Trinity enrolls more District of Columbia residents than any other private university in the city and in the nation – more than half of Trinity’s students are residents of the D.C. Trinity’s student body in 2020 includes about 95% ethnic minorities, including about 65% Black/African American and 30% Latina/Hispanic. Trinity is designated by the U.S. Department of Education as a Minority Serving Institution and is the only university in the D.C. region, and one of only a few in the nation, designated as both a Predominantly Black Institution and Hispanic Serving Institution.

The McMillan Fountain is a public artwork by American artist Herbert Adams located on the McMillan Reservoir grounds. The fountain, completed in 1912 and dedicated in October 1919, consists of a sculptural group of the Three Graces placed upon a pink granite base. Cast by Roman Bronze Works, the fountain was originally part of a large landscape setting designed by Charles A. Platt. The fountain currently resides near its original location at McMillan Reservoir in the Bloomingdale neighborhood of Washington, D.C.

The Fire Department Headquarters-Fire Alarm Headquarters is an historic structure located in the Bloomingdale neighborhood in Washington, D.C. It was listed on both the District of Columbia Inventory of Historic Sites and on the National Register of Historic Places in 2011. The building was designed by Nathan C. Wyeth and built in 1939 along the McMillan Reservoir.

Prospect Hill Cemetery, also known as the German Cemetery, is a historic German-American cemetery founded in 1858 and located at 2201 North Capitol Street in Washington, D.C. From 1886 to 1895, the Prospect Hill Cemetery board of directors battled a rival organization which illegally attempted to take title to the grounds and sell a portion of them as building lots. From 1886 to 1898, the cemetery also engaged in a struggle against the District of Columbia and the United States Congress, which wanted construct a main road (North Capitol Street) through the center of the cemetery. This led to the passage of an Act of Congress, the declaration of a federal law to be unconstitutional, the passage of a second Act of Congress, a second major court battle, and the declaration by the courts that the city's eminent domain procedures were unconstitutional. North Capitol Street was built, and the cemetery compensated fairly for its property. In the 20th century, Prospect Hill Cemetery sold unneeded land, dismantled its chapel, and repositioned the cemetery's main entrance toward North Capitol Street and away from Lincoln Road NE. Established as a burying ground for members of the Lutheran faith, it gradually became a secular cemetery. Prospect Hill remains an active cemetery, and continues to accept burials.

Children's National Hospital (formerly Children's National Health System, DC Children's Hospital, Children's National Medical Center) is a nationally ranked, freestanding, 323-bed, pediatric acute care children's hospital located in Washington D.C. It is affiliated with the George Washington University School of Medicine and the Howard University College of Medicine. The hospital provides comprehensive pediatric specialties and subspecialties to infants, children, teens, and young adults aged 0–21 throughout the region. The hospital features an ACS verified level I pediatric trauma center, the only in the District of Columbia. Its regional pediatric intensive-care unit and neonatal intensive care units serve the region. The hospital also has a rooftop helipad for critical pediatric transport.Children's National is ranked among the best pediatric hospitals in the United States by U.S. News & World Report and The Leapfrog Group. In June 2021 the hospital was ranked as the #7 best children's hospital in the United States by U.S. News & World Report on the publications' honor roll list. The neonatology division was also ranked #1 in the country for the fourth year in a row.

The Samuel Gompers House is a historic house at 2122 1st Street NW, in the Bloomingdale neighborhood of Washington, D.C. Built around the turn of the 20th century, it was from 1902 until 1917 home to Samuel Gompers (1850–1924), who was founder and president of the American Federation of Labor from 1886 until his death. It was declared a National Historic Landmark in 1974.

MedStar National Rehabilitation Network (MedStar NRH) is located in Washington, D.C., and specializes in treating persons with physical disabilities, including spinal cord injury, brain injury, stroke, arthritis, amputation, multiple sclerosis, post-polio syndrome, orthopedic, and other neurological conditions. National Rehabilitation Hospital was founded in 1986 by Edward A. Eckenhoff, and is a member of the MedStar Health system, the Washington, D.C.-Baltimore region's largest non-profit healthcare organization.MedStar National Rehabilitation Hospital has grown from a single hospital into MedStar National Rehabilitation Network, which provides inpatient, outpatient, and day treatment programs. The network provides more than 350,000 ambulatory visits annually in addition to the hospital's more than 2,200 inpatient admissions. Since its inception, MedStar NRH has admitted in excess of 35,000 inpatients and provided over 2 million outpatient visits.

The Washington Cancer Institute (WCI) is Washington, D.C.'s largest cancer care provider, treating more cancer patients than any other program in the nation's capital. The Washington Cancer Institute opened on May 9, 1992. Under the leadership of Dr. Sandra Swain, the Cancer Institute diagnosed more than 2,305 new cases during fiscal year 2007. There were more than 79,720 outpatient visits and more than 2,334 inpatient admissions during that period. WCI provides comprehensive, interdisciplinary care including surgical, radiation and medical oncology services as well as counseling for patients and families, cancer education, community outreach program and clinical research trials. The Center for Breast Health saw 15,242 patients during fiscal year 2007. WCI is affiliated with the Washington Hospital Center.