The B&O Warehouse is a building in Baltimore, Maryland, adjacent to Oriole Park at Camden Yards. It was constructed by the Baltimore and Ohio Railroad (B&O) beginning in 1899, with later sections completed in 1905, adjacent to the B&O's Camden Station and freight yard at Camden and Eutaw streets. Often purported to be the longest brick building on the East Coast, the 1,116-foot (340 m) long, eight-story brick structure had 430,000 square feet (almost 40,000 m²) of floor space for merchandise storage and distribution, large enough to hold 1,000 carloads of freight at a time, the B&O advertised. Railroad historian Herbert H. Harwood proclaimed it an "awesome structure ... a truly classic turn-of-the-century railroad warehouse." The warehouse was used by the B&O through the 1960s but was mostly vacant by the 1970s due to the use of trucks and newer, more efficient single-floor warehouses located in industrial parks elsewhere.
With the development of the downtown stadium for the Orioles, which opened in 1992, the former B&O warehouse was converted to team offices, team spaces, and a private club for the Orioles. It is also used for private wedding receptions.
- Herbert W. Harwood, Jr., Impossible Challenge. Baltimore, Md.: Bernard, Roberts and Co., 1979 (ISBN 0-934118-17-5), p. 150.
- Harwood, p. 416.
- Stephen J. Salamon, David P. Oroszi, and David P. Ori, Baltimore and Ohio – Reflections of the Capitol Dome. Silver Spring, Md.: Old Line Graphics, 1993 (ISBN 1-879314-08-8), pp. 26–29.