Following Nelson Mandela's passing, tributes have been pouring in for the former South African president and human rights activist. While celebrities have taken to Twitter to pay their respects, people around the world have been visiting statues, memorials, and museums to commemorate Mandela's incredible life. On Sunday, South Africa held a national day of prayer to honor their former president, with people of all ages gathering to sing, dance, and pray. Meanwhile, a candlelight vigil drew people together in Pakistan, Londoners gathered to write messages in a condolence book, and flags everywhere flew at half mast to honor Mandela. As the world celebrates Nelson Mandela's contributions after his passing, take a look at all the touching photos of people's tributes across the globe.