Constructed in 1873, Eastern Market is one of Washington, D.C.’s most coveted and historic food halls. It was designed with advanced lighting and ventilation as well as basement meat coolers. When it opened, there were 80 booths that sold meat, vegetables, and other food products to the public. The building was expanded with two halls in 1908 by municipal architect Snowden Ashford.

In the mid-twentieth century, attendance to the grocery chain declined until the D.C. government considered selling the building as surplus property. After exterior preservation work in the 1970s, led by architect Mary Oehrlein, the building continued its use.

In 2007, the building had to once again undergo a two-year restoration that would amount to $22 million, at the result of a massive fire. During this restoration, new restrooms, heating and air conditioning, and windows were installed.

This building was listed in the National Register of Historic Places in 1971.

Originally known as the National Museum, this building was constructed in 1881 by the firm of Cluss and Schulze. At the time, it offered 17 galleries, which have since been converted into other uses, such as offices, storage, and equipment rooms.

In 2003, the building closed to the public for repairs by architect Mary Oehrlein. It didn’t reopen until 2015, and is only open for special events.

When this school was constructed by Cluss in 1869, it served as the flagship building of eight modern urban public school buildings.

On the rooftop of the school in 1880, Alexander Graham Bell tested his invention, the photophone, which allows sound to be transmitted by light waves. Because of this, the school was later declared a National Historic Landmark in 1996.

In 2002, the building was later used as a homeless shelter that eventually closed in September 2008.

Currently, the building is being redeveloped into the nation’s first interactive museum of words and language, known as Planet Word. The delivery for the project is slated for the winter of 2019.

At one point, it seemed like this school was doomed. The D.C. government was ready to raze this building, but the D.C. Superior Court halted demolition. It was later rehabilitated and restored by the architectural firm Hartman-Cox.

The structure is now used for the D.C. public school archives and a museum. The school was named after abolitionist and U.S. Senator Charles Sumner.

This 1872-constructed school building was listed in the National Register of Historic Places in 1979.

Unfortunately, this Cluss building no longer exists as it was replaced by the Hirshhorn Museum. The museum is still operated on the campus of the National Institutes of Health as the world’s largest biomedical library, founded in 1836.

In the beginning, the library was located in the office of the U.S. Army Surgeon General. It didn’t move to its current location until 1962. Before then, it was located in the Riggs Bank Building, later the Ford’s Theater, before moving once again to the 1886-constructed Army Medical Museum and Library Building at 7th Street SW and Independence Avenue SW in Washington, D.C. Despite being listed on the National Register of Historic Places, it was still met with the wrecking ball in 1969.