What was the first concert tour to gross $2bn in ticket sales? The Saturday quiz

From the Cosmati Pavement and Pyx Chamber to Ode to the Yimeng Mountains, test your knowledge with the Saturday quiz

1 Who requested in his will that an art gallery be established in Linz?
2 Which mustelid was named “most fearless animal” by Guinness World Records?
3 What was the first concert tour to gross $2bn in ticket sales?
4 The Kirkwood gaps are regions within what?
5 The Ishihara test is used to diagnose which condition?
6 Which element is named from the Greek for lead?
7 Helvetia appears on which country’s stamps?
8 Which sports teams were rebranded from “minor” to “national” in 2020?
What links:
9 Agatha Christie; Sophia Engastromenou; Earl Spencer?
10 The Red Detachment of Women; The White-Haired Girl; Ode to the Yimeng Mountains?
11 Cosmati Pavement; Henry VII Chapel; Pyx Chamber; Shrine of Edward the Confessor?
12 Alexandria and Avignon; Balkans and Levant; Cairo; New York?
13 Lost (Confederate myth); Good Old (English republicanism); Great (13th-century Scottish succession)?
14 Coldplay; Devo; James; Talking Heads; U2?
15 Alces alces, Canada; Haliaeetus leucocephalus, US; Panthera onca, Mexico?