AAA Oct. 17, 2013 12:17 PM ET 10 Things to See: A week of top AP photos By The Associated PressBy The Associated Press, Associated Press Muslim pilgrims pray on a rocky hill called the Mountain of Mercy, near the holy city of Mecca, Saudi Arabia, Monday, Oct. 14, 2013. Joined by their faith and a desire to purify their souls, more than 2 million Muslims from nearly 200 countries gathered around a hill in Saudi Arabia on Monday marked by a small white pillar. It is here, in Mount Arafat on the Mountain of Mercy, known in Arabic as Jabal al-Rahma, that the Prophet Muhammad is believed to have delivered his last sermon to tens of thousands of followers, calling on Muslims to unite. (AP Photo/Amr Nabil) In this Oct. 14, 2013 photo, ecology professor Ricardo Freitas, wearing camouflage barefoot sport shoes, sits on top of a broad-snouted caiman he captured in a water channel to examine and release in the affluent Recreio dos Bandeirantes suburb of Rio de Janeiro, Brazil. While a few caimans wander from the canal, sometimes getting hit by cars, Freitas said he is aware of only one other person attacked by a caiman, a fisherman who was superficially bitten after he stepped on one. (AP Photo/Felipe Dana) Thania Sayne of Effingham, Ill., cries at the grave of her husband, Army Sgt. Timothy D. Sayne, during the playing of taps at a nearby burial service at Arlington National Cemetery, in Arlington, Va., Wednesday, Oct. 16, 2013, a day before what would have been their third wedding anniversary. Sayne, was 4 months pregnant with their second son, Douglas, when her husband was killed on Sept. 18, 2011, in the Kandahar province of Afghanistan. A rescue worker searches the remains of a building that collapsed late Saturday, in Medellin, Colombia, on Sunday, Oct. 13, 2013. Medellin disaster preparedness chief Jaime Enrique Gomez says they're trying to rescue 11 people missing in the collapse of a high-rise building and they still hold out hope of finding all alive following the Saturday night collapse in one of the most exclusive neighborhoods of Medellin, Colombia's second-largest city. AP Photo/Luis Benavides Senate Majority Leader Sen. Harry Reid, D-Nev., center, pauses during a news conference with Sen. Chuck Schumer, D-N.Y., left, Sen. Dick Durbin, D-Ill., (not shown) and Sen. Patty Muray, D-Wash., right, during on Capitol Hill on Saturday, Oct. 12, 2013 in Washington. This week's collection includes a man subduing a caiman in Rio de Janeiro, Secretary of State John Kerry in a black hawk helicopter in Kabul and Muslim pilgrims praying on the Mountain of Mercy in the holy city of Mecca, Saudi Arabia. This gallery contains photos published Oct. 10-17, 2013. Muslims mark Eid al-Adha holiday: http://apne.ws/16dBlhD Bolivian villagers round up vicunas: http://apne.ws/16R786w Pilgrims start hajj in Saudi Arabia: http://apne.ws/H68Zdc A look at the Chicago Marathon: http://apne.ws/174XfV2 The Mercury 7 Astronauts: http://apne.ws/1arBkmc This gallery was curated by news producer Caleb Jones. Follow him on Twitter (http://twitter.com/CalebAP) and Instagram (http://instagram.com/calebnews)