Morry Gash/AFP/Getty Images The casket of US Sen. John McCain lies in state at the US Capitol on Friday, August 31. In pictures: The John McCain memorials

Morry Gash/AFP/Getty Images The casket of US Sen. John McCain lies in state at the US Capitol on Friday, August 31.

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.