Guglielmo Marconi (Piccirilli)

The James Cardinal Gibbons Memorial Statue is a public artwork by Leo Lentelli, located at the Shrine of the Sacred Heart, 16th Street and Park Road Northwest, Washington, D.C. The James Cardinal Gibbons Memorial Statue was originally surveyed as part of the Smithsonian's Save Outdoor Sculpture! survey in 1993. It was listed with the National Register of Historic Places in 2007.

The Buildings at 1644–1666 Park Road NW are twelve semi-detached row houses in the Mount Pleasant neighborhood of Washington, D.C. They are typical of speculative row house development in the neighborhood. The houses were designed in the Colonial Revival style by Washington architect Appleton P. Clark Jr., and completed in 1906. They are a few of such houses that he designed and exemplify his facility for eclectic design and sophistication. The houses are three stories in height and the exteriors are covered in brick. They feature slate Mansard roofs and wooden front porches. The styles of the main facades alternate and contain shallow oriel windows, prominent dormers and curved pediments. They were listed in the National Register of Historic Places in 1986.

HacDC is a hackerspace in Washington, D.C., and a 501(c)(3) nonprofit. According to one member's description, "HacDC members improve the world by creatively rethinking technology. We break, build, and occasionally abuse technology in the pursuit of greater knowledge about how it works and re-purpose it to build new things." In March 2009, its activities were described by The Washington Post. In April 2011, its activities were also mentioned by FastCompany., and NPR's All Tech Considered.

Embassy Building No. 10 is a historic building located at 3149 16th Street Northwest, Washington, D.C., in the Columbia Heights neighborhood. Although as the name implies it was built to be a foreign mission, it was never in fact used as such; instead, it served as the central office of the District's municipal parks department for nearly seventy years.

The Shrine of the Sacred Heart is a Roman Catholic parish established in 1899 in the Mount Pleasant/Columbia Heights neighborhood of Washington D.C. The parish church is a large domed Byzantine structure modeled after the Cathedral in Ravenna, Italy. The current church is actually the second that the Shrine of the Sacred Heart community has called home. The original red brick structure was dedicated in 1901, and the current structure in 1922. Both buildings were influenced by the City Beautiful architectural movement which overtook Washington from 1901 to 1910.The parish was originally part of the Archdiocese of Baltimore before the establishment of the Diocese of Washington in 1923. The diocese was elevated to an archdiocese in 1939.

St. Stephen and the Incarnation is an Episcopal parish in the Mount Pleasant neighborhood of Washington, D.C. It was formed by the merger of St. Stephen's parish and the Church of the Incarnation. It is notable as the site of the second ordination of female priests in the Episcopal Church and the first public celebration of the Eucharist in the Episcopal Church by a female celebrant. The church has also played a role in climate change activism. As Bill McKibben noted in his book Oil and Honey, activists used the church as a staging ground for protests related to the Keystone XL Pipeline.

The Mount Pleasant Library at 1600 Lamont Street, NW in Washington, DC is a branch of the District of Columbia Public Library System that opened in May 1925, and is the third oldest public library building still in use in Washington.

Bell Multicultural High School is a public school located in the neighborhood of Columbia Heights in Washington, D.C., United States. Bell Multicultural is a part of the District of Columbia Public Schools. As of May 2008, the principal is Maria Tukeva.

Mount Pleasant is a neighborhood in the northwestern quadrant of Washington, D.C. It is bounded by Rock Creek Park to the north and west; Harvard Street NW to the south; and 16th Street NW to the east. It is north of Adams Morgan and west of Columbia Heights. It is home to approximately 10,000 people. The western four-fifths of the neighborhood is a largely wooded residential enclave bounded on two sides by Rock Creek Park, just east of the National Zoo. Structures in this area are primarily row houses of Neoclassical architecture with rear porches, with some subdivided into multiple apartments. The Eighteen Hundred Block Park Road, NW is notable for its ten detached "suburban" houses on terraces overlooking the street. The twelve buildings at 1644–1666 Park Road NW, designed by Appleton P. Clark Jr. in the style of Colonial Revival architecture, were completed in 1906.The eastern side of the neighborhood, along 16th Street NW and Mount Pleasant Street, is marked by mid-rise apartment buildings. These buildings offer rental apartments, condominiums and housing cooperatives. A four-block commercial corridor with convenience shopping extends along Mount Pleasant Street. It is also walking distance from larger retail developments in Columbia Heights. The neighborhood is served by the Mount Pleasant Line and the Crosstown Line buses. A series of "Heritage Trail" historical markers are installed in Mount Pleasant. The markers, which may be followed as a walking tour, consist of 17 poster-sized street signs featuring narrative, photographs and maps.

The Riggs–Tompkins Building is an historic structure located in the Columbia Heights neighborhood of Washington, D.C. George N. Ray designed the building that was completed in 1922. It has been listed on the District of Columbia Inventory of Historic Sites since 1985 and it was listed on the National Register of Historic Places in 1987.

DC USA is an 890,000-square-foot (83,000 m2) retail development in the Columbia Heights neighborhood of Washington, D.C. A Washington City Paper poll named DC USA the "Best Designed Retail Space" of 2009. The development is adjacent to the Columbia Heights station on the Yellow and Green Lines of the Washington Metro. It is also served by ten bus routes and has a 1,000-space parking garage. Anchored by big-box retail stores typically associated with suburban developments, the complex is accessible to more than 36,000 residents within a 10-minute walk of the site. A total of 335,000 residents live within a 3-mile (4.8 km) radius. The development has been designed to fit into its urban setting, with the buildings holding the street line to frame the sidewalks and continue the urban scale. Target, one of the anchors, has expanded its urban store concept to numerous cities across the country. In 2013 it opened a store in a redeveloped historic office building in the heart of Portland, Oregon.

Hilltop Manor, now known as The Cavalier, is an historic structure located in the Columbia Heights neighborhood in the Northwest Quadrant of Washington, D.C. This building is one of several developments between architect Harvey H. Warwick and developer Morris Cafritz, and is one of the first cooperative apartment buildings in the city. The building was opened in 1927 along the 14th Street streetcar line. Its size and density shows the rapid growth Washington experienced along major thoroughfares after World War I. It was listed on the National Register of Historic Places in 2007.