In a statement from both himself and his wife Melania, US President Donald Trump said the former president "inspired generations of his fellow Americans to public service".
FILE - In this October 29, 1991, file photo, President George H.W. Bush gestures during a joint news conference with Soviet President Mikhail Gorbachev, at the Soviet Embassy in Madrid.
The office of former President Barack Obama and Michelle Obama said Bush's life was "a testament to the notion that public service is a noble, joyous calling".
Bush is survived by five children and 17 grandchildren. One of their children - daughter Robin - died just before turning four years old. Funeral arrangements will be announced in due course, he said.
"President Bush's calmness, leadership and close personal relationships with Helmut Kohl and Mikhail Gorbachev were decisive in restoring peace and freedom back to so many people across our Continent". He was America's 41st President, and had suffered a myriad of health problems over the past years, including vascular Parkinsonism.
The conference was mainly symbolic, but it set the stage for the Oslo Accords two years later.
Bush was a man of outstanding political credentials, guiding America and the world towards the end of the Cold War. The youngest pilot in the Navy when he received his wings, he flew 58 combat missions during World War II.
Amazon unveils its own server chip, challenging Intel on price
Walter Scott, CTO of DigitalGlobe, said that AWS Ground Station will let us get data into Cloud faster. Apart from easier access to data, the service will also help reduce costs by up to 80 per cent.
Yale University, bachelor's degree in economics. Bush's family grow, so does his resume - from businessman to congressman, then United Nations ambassador and director of central intelligence.
"To make sure it was cemented he also went to the United Nations to get a United Nations resolution". In 1988 Bush won the Republican nomination for President and, with Senator Dan Quayle of IN as his running mate, he defeated Massachusetts Governor Michael Dukakis IN the general election.
Mr Gorbachev worked closely with Mr Bush to bring an end to the Cold War in the late 1980s and 1990s, and lauded the former president for his abilities as a politician and his personal character.
Despite his success on the worldwide stage, he was denied a second term over a weak economy, losing the 1992 election to upstart Democrat Bill Clinton, a little-known governor from Arkansas.
In this November 11, 2014, file photo, former President George H.W. Bush acknowledges the crowd at his presidential library before his son former President George W. Bush discusses his new book "41: A Portrait of My Father" in College Station, Texas. But his son who bears his name, came in as the 43rd president after the era of Bill Clinton.
The Battalion tweeted out a photo of a similar student gathering after former first lady Barbara Bush died in April. Bush saying, "We waited for you".
"America has lost a patriot and humble servant in George Herbert Walker Bush", Obama wrote.