The Begich Towers Condominium is a building in the small city of Whittier, Alaska. The structure is notable for operating like a small-scale arcology, being the residence for nearly the entire population of the city, as well as containing many of its public facilities. This has earned Whittier the nickname of a "town under one roof".
The area where modern-day Whittier sits was developed during World War II, when it was chosen as the place to build a military harbor and a logistics base for the US Army. After the war, the military planned to develop a large complex in the area. What is now the Begich Towers was part of that plan.
The building was designed in 1953 by Anton Anderson to host the headquarters of the US Army Corps of Engineers. It was named the Hodge Building in memory of Colonel William Walter Hodge, commander of the 93rd Engineer Regiment on the Alcan Highway. The Hodge Building was part of a larger project that included the construction of ten other similar buildings for military use. In 1957 the Buckner Building was constructed adjacent to the towers. Despite the ambitious plan, these buildings were the only two to be built, and they were used by the US Army until the early 1960s.
In 1964, the area was hit by a tsunami caused by the Good Friday earthquake, but the damage was not extensive. The Hodge Building was transformed into a public building with several units, including the headquarters of the major institutions and commercial services of Whittier.
In 1972 the building was renamed in memory of Nick Begich, a Congressman from Alaska who disappeared in the area and is presumed to have died in a plane crash. In 1974 the Begich Towers Condominium Association of Apartment Owners Inc. became the official manager of the entire structure.
With most of the community and its services either inside of or connected to the building, residents are able to remain inside the building for long periods of time if the weather is inclement, or they simply do not want to leave.
Completed in 1957, the building has a rectangular plan and a flat roof. It is 14 floors high and is made up of three modules connected together. The north side has two protruding modules that form two square towers. Inside, sets of branched corridors and elevators allow residents access to all areas of the complex.
In addition to the residential areas the building contains the basic services of Whittier: a post office, general store, hospital, the Whittier Police Department, and the mayor's office. There is also a small Methodist Church, a grocery, laundry, a small hotel, conference room, and a play area with an indoor pool.
During the U.S. Military's tenure in Whittier, all buildings constructed in had their hydronic heating needs fulfilled by a single heating plant. Following the Army's departure, each building had to get its own system, including the Begich Towers, which had a pair of boilers in a side building.
As of 2015, only one of the two boilers serving Begich Towers was functional, and experiencing major maintenance related issues nearly daily. The problem present within the heating system was traced back to the fact that the hydronic loop used water which was susceptible to freezing, instead of a mixture of domestic water and glycol which lowers the freezing point, and prevents pipes from bursting due to ambient temperature drops below zero Celsius.
As of 2016, funding for repairs relating to maintaining mechanical systems, as well as renovating the facade came with a $3 million grant from the U.S. Department of Agriculture. 
- Moni Basu (July 2015). "Northern Enclosure: Alaska's One-House Town, Home to Hundreds". CNN. Retrieved July 29, 2015.
- "Pacific Rim Properties". Manta. Retrieved 8 January 2015.
- Dunham, Mike (12 August 2019). "Begich Towers, home to about half the population of Whittier, gets a much-needed overhaul". Anchorage Daily News. Retrieved 12 August 2019.