The questions

1 Where in London is the world’s longest single-span roof structure? 2 Who was the first female caddy to win a golf major? 3 Shot in California, the Patterson-Gimlin film is said to show which creature? 4 Which celebration can be al-Fitr or al-Adha? 5 Which writer’s only major prize was the 1974 Somerset Maugham award? 6 What might feature a conning tower? 7 Which primate is the loudest land mammal? 8 Who established the Uraniborg observatory and alchemical lab? What links: 9 Contained Ten Commandments; Mesoamerican quartz head; Antikythera mechanism? 10 Northern Union; Virginia Slims Circuit; PDC; LIV; WSC? 11 Hundred Flowers; Four Pests; Destruction of Four Olds; Down to the Countryside? 12 North; St George’s; Bristol; English? 13 Oryza sativa; Solanum tuberosum; Triticum; Zea mays? 14 Butch Cassidy and the Sundance Kid; Che Guevara? 15 NY (2); CT, MA, NH, NJ, PA and RI (one each)?

Got the golf answer? Photograph: Yagi Studio/Getty Images The answers

1 Wembley Stadium arch. 2 Fanny Sunesson (with Nick Faldo). 3 Bigfoot (sasquatch). 4 Eid. 5 Martin Amis. 6 Submarine (or warship). 7 Howler monkey. 8 Tycho Brahe. 9 Inspired title objects in Indiana Jones films: Lost Ark; Crystal Skull; Dial of Destiny. 10 Breakaway sports organisations: rugby league; tennis; darts; golf; cricket. 11 National campaigns in Mao’s China. 12 Sea channels around the UK. 13 Scientific names of staple crops: rice; potato; wheat; maize. 14 Died (or assumed to have died) in Bolivia. 15 Ivy League universities by US state.