One of DC's oldest surviving buildings has just been restored. The 181 year old Lockkeeper's House is located just west of the Washington Monument, near 17th St and Constitution Ave NW.
The 350 square foot house was the home and workplace of lockkeepers who collected tolls and kept records of boats traveling through the Washington City Canal. The canal, which was filled in during the 1970s, ran along what is now Constitution Avenue.
The house recently underwent a $6 million renovation and slight relocation (of a few feet). It will reopen permanently later in 2018. This is a small, but fascinating part of Washington's history!