Question: Augustus Phillimore created a modern dockyward at which British Overseas Territory?

Context paragraphs:
Flag of the British Antarctic Territory: The flag of the British Antarctic Territory was granted on 1 August 1963, a year after the British Antarctic Territory, a British Overseas Territory, was created.  Previously, the Territory was a part of the Falkland Islands Dependencies and used the same flag.

Augustus Phillimore: Admiral Sir Augustus Phillimore KCB (24 May 1822 – 25 November 1897) was a Royal Navy officer who went on to be Commander-in-Chief, Plymouth.  He is creditted with first proposing the creation of a modern naval dockyard in Gibraltar.

British Overseas Territories citizen: The status of British Overseas Territories citizen (BOTC) relates to persons holding British nationality by virtue of a connection with a British Overseas Territory (BOT).  Nearly all BOTCs are also British citizens as a result of the changes made to British nationality law in 2002.

Gibraltarians in the United Kingdom: Gibraltarians in the United Kingdom is a term referring to Gibraltarian-born immigrants to the United Kingdom and their British-born descendents. Gibraltar is a British overseas territory therefore it allows individuals born there the right of abode in the United Kingdom.  They hold British Overseas Territory Citizenship but may apply for registration as a British citizen (an entitlement that cannot be refused) under section 5 of the British Nationality Act 1981 and are considered United Kingdom nationals for European Union purposes with all consequential rights and entitlements.

Premier of the Cayman Islands: The Premier of the Cayman Islands is the political leader and head of government.  The post of Premier in the Cayman Islands is the equivalent to Chief Minister or Prime Minister in other British Overseas Territories.  It is the highest political level that can be attained within the British overseas territory.  Prior to 2009, the position was known as Leader of Government Business.

Gibraltar: Gibraltar ( , or other permutations; ] ) is a British Overseas Territory located on the southern end of the Iberian Peninsula.  It has an area of 2.6 sqmi and shares its northern border with Spain.  The Rock of Gibraltar is the major landmark of the region.  At its foot is a densely populated city area, home to over 30,000 Gibraltarians and other nationalities.

Royal Montserrat Defence Force: The Royal Montserrat Defence Force is the home defence unit of the British Overseas Territory of Montserrat.  Raised in 1899, the unit is today a reduced force of about twenty volunteer soldiers, primarily concerned with ceremonial duties.  The unit has a historical association with the Irish Guards.  The current Commander is Alvin Ryan, recently promoted to Major, who took over from the late Captain Horatio Tuitt.  As a British Overseas Territory (BOT), defence of Montserrat remains the responsibility of the United Kingdom.

Gibraltar House: The Representative of Gibraltar in London is the diplomatic mission of the British Overseas Territory of Gibraltar in the United Kingdom, also referred to as Gibraltar House.  Located on Strand, it works like an informal consulate, tourist information centre about the British Overseas Territory of Gibraltar and deals with the needs of Gibraltarian patients sent over by the Gibraltar Health Authority for medical treatment in the United Kingdom.

Politics of Gibraltar: The politics of Gibraltar takes place within a framework of a parliamentary representative democratic British Overseas Territory, whereby the Monarch of the United Kingdom is the constitutional head of state represented by the Governor of Gibraltar.  The Chief Minister of Gibraltar is the head of Government.  As a British Overseas Territory, the Government of Gibraltar is not subordinate to the Government of the United Kingdom.  The British Government, however, is responsible for defence and external affairs but Gibraltar has full internal self-government under its 2006 Constitution.  Gibraltar is represented in the European Union, having been the only British Overseas Territory to have joined the European Economic Community under the British Treaty of Accession (1973).

Mount Michael: Mount Michael ( ) is an active volcanic mountain, 805 m (2640 ft), surmounting Saunders Island in the South Sandwich Islands.  It is a part of the British Overseas Territory, the South Georgia and the South Sandwich Islands and is one of the few volcanos in an overseas territory of the United Kingdom.  The island was discovered by a British expedition under Cook in 1775, but the mountain was presumably first charted in 1820 by a Russian expedition under Bellingshausen.  Recharted in 1930 by DI personnel on the Commander W.M. Carey, Royal Navy, captain of the "Discovery II" at the time of the survey.

Supporting paragraphs: Augustus Phillimore Gibraltar
Answer: Gibraltar