The Maryland Zoo in Baltimore

The Maryland Zoo — also known as The Maryland Zoo in Baltimore and formerly known as The Baltimore City Zoo or the Baltimore Zoo — is a 135-acre park located in historic Druid Hill Park in the northwestern area of the City of Baltimore, Maryland, with the postal address of 1876 Mansion House Drive. Druid Hill was opened in 1876 as the first major park purchase by the City under foreseeing Mayor Thomas Swann, and was later designed by famed nationally-known landscaper Frederick Law Olmsted.

Additional work on various park buildings contributed by future Baltimore City Hall architect George A. Frederick, and Park Commissioner John H.B. Latrobe, who also was an accomplished lawyer, author, artist, amateur architect and civic leader.

Source: Wikipedia