The Bullfinch Gatehouses certainly get around.

Now at Constitution Ave. and 15th and 17th Streets, the two gatehouses were once on the western edge of the U.S. Capitol grounds from 1828-74. Named for Charles Bullfinch, a prominent Boston architect before succeeding Benjamin Latrobe as architect of the Capitol, the sandstone houses were relocated because of landscaping changes at the Capitol.

You’ll see two floor marks on the left side of the gatehouse. The Feb. 12, 1881 mark is the higher about 2 1/2 feet high. An 1877 flood was about one foot high.