In pictures: The John McCain memorials

Americans have been paying tribute to US Sen. John McCain, who died August 25 at the age of 81.

McCain's memorial services took place over five days in three cities.

They began Wednesday in the Republican's home state of Arizona, where there was a public viewing at the state Capitol in Phoenix.

On Thursday, McCain's body was flown to the East Coast so he could lie in state at the US Capitol on Friday.

Former Presidents Barack Obama and George W. Bush delivered eulogies Saturday at the Washington National Cathedral. McCain was buried Sunday at the US Naval Academy Cemetery in Annapolis, Maryland.

McCain's wife, Cindy, lays her head on her husband's casket during his burial service on Sunday.

David Hume Kennerly/AP

McCain's son Jimmy hugs his brother Jack during the private burial service.

David Hume Kennerly/AP

Sailors follow McCain's casket along the procession route at the US Naval Academy. McCain graduated from the academy in 1958 and served in the Navy until 1981.

Nathan Burke/U.S. Naval Academy Public Affairs

McCain's casket is brought out of a chapel during a private funeral service at the US Naval Academy.

Nathan Burke/U.S. Naval Academy Public Affairs

McCain's casket is carried out of the chapel Sunday.

Nathan Burke/U.S. Naval Academy Public Affairs

Sailors participate in Sunday's funeral service.

Nathan Burke/U.S. Naval Academy Public Affairs

Cindy McCain looks on as her husband's casket is carried after a funeral service Saturday at the Washington National Cathedral.

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McCain's casket is carried out of the National Cathedral at the end of Saturday's service.

Pablo Martinez Monsivais/AP

Former President Barack Obama delivered a eulogy and <a href="https://www.cnn.com/2018/09/01/politics/obama-eulogy-john-mccain-funeral/index.html" target="_blank">praised McCain's efforts</a> to push the nation to rise above "mean and petty" politics. "So much of our politics, our public life, our public discourse can seem small and mean and petty, trafficking in bombast and insult, and phony controversies, and manufactured outrage," Obama said. "It's a politics that pretends to be brave and tough, but in fact is born of fear. John called on us to be bigger than that. He called on us to be better than that."

Former President Barack Obama delivered a eulogy and praised McCain's efforts to push the nation to rise above "mean and petty" politics. "So much of our politics, our public life, our public discourse can seem small and mean and petty, trafficking in bombast and insult, and phony controversies, and manufactured outrage," Obama said. "It's a politics that pretends to be brave and tough, but in fact is born of fear. John called on us to be bigger than that. He called on us to be better than that."

Pablo Martinez Monsivais/AP

Former President George W. Bush <a href="https://www.cnn.com/2018/09/01/politics/george-bush-eulogy-john-mccain-funeral/index.html" target="_blank">spoke about his relationship with McCain</a> and how their rivalry melted away over time. Bush defeated McCain to become the GOP's presidential nominee in 2000. "Back in the day, he could frustrate me. And I know he'd say the same thing about me. But he also made me better," Bush said.

Former President George W. Bush spoke about his relationship with McCain and how their rivalry melted away over time. Bush defeated McCain to become the GOP's presidential nominee in 2000. "Back in the day, he could frustrate me. And I know he'd say the same thing about me. But he also made me better," Bush said.

Saul Loeb/AFP/Getty Images

From left, former President George W. Bush; former first lady Laura Bush; former President Bill Clinton; former Secretary of State Hillary Clinton; former Vice President Dick Cheney; Cheney's wife, Lynne; and former Vice President Al Gore sing during the memorial service Saturday.

Pablo Martinez Monsivais/AP

Former Secretary of State Henry Kissinger said the world will be lonelier without McCain.

Pablo Martinez Monsivais/AP

Meghan McCain <a href="https://www.cnn.com/2018/09/01/politics/meghan-mccain-john-mccain-funeral/index.html" target="_blank">pays tribute to her father</a> during the service. "We gather here to mourn the passing of American greatness, the real thing, not cheap rhetoric from men who will never come near the sacrifice he gave so willingly, nor the opportunistic appropriation of those who live lives of comfort and privilege while he suffered and served," she said.

Meghan McCain pays tribute to her father during the service. "We gather here to mourn the passing of American greatness, the real thing, not cheap rhetoric from men who will never come near the sacrifice he gave so willingly, nor the opportunistic appropriation of those who live lives of comfort and privilege while he suffered and served," she said.

Pablo Martinez Monsivais/AP

Meghan McCain and her mother embrace as the senator's casket arrives at the National Cathedral.

Drew Angerer/Getty Images

From left, former President Barack Obama, former first lady Michelle Obama, former Vice President Al Gore, former President George W. Bush, former first lady Laura Bush and former Secretary of State Hillary Clinton arrive for Saturday's memorial service.

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From left, former Defense Secretary William Cohen, former New York Mayor Michael Bloomberg, former Vice President Joe Biden and actor Warren Beatty serve as pallbearers.

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A military honor guard carries McCain's casket at the Washington National Cathedral.

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Rhonda Zuck, left, and her husband, Tim, drove from Racine, Wisconsin, for a wreath-laying ceremony at the Vietnam Veterans Memorial.

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Cindy McCain is accompanied by White House Chief of Staff John Kelly, left, and Defense Secretary Jim Mattis as she lays a wreath at the Vietnam Veterans Memorial on Saturday.

Andrew Harnik/AP

A visitor becomes emotional while paying respects to the late senator as he lied in state Friday in the US Capitol's rotunda.

Andrew Harnik/AP

Cindy McCain pray