Photos: Top 10 Global Concert Tours

The Top 20 Global Concert Tours ranks artists by average box office gross per city. The list is based on data from Pollstar.

FILE - In this June 4, 2015 file photo, warning signs posted by the California Department of Fish and Game mark closed areas affected by an oil spill at Refugio State Beach, north of Goleta, Calif. Cleanup work continues one month after the May 19 oil spill north of Santa Barbara, Calif. The ruptured pipeline released up to 101,000 gallons of crude including 21,000 gallons that flowed into a storm drain and out into the Santa Barbara Channel.(AP Photo/Damian Dovarganes, File)

A snapshot of the California oil spill

GOLETA, Calif. (AP) — On May 19, an onshore pipeline broke, spilling up to 101,000 gallons of crude in Santa Barbara County. About 21,000 ga…