sex work

San Antonio had one of the busiest red-light districts in the U.S. at the turn of the 20th Century. Historians now believe that district was even bigger than they realized.

San Antonio was once home to one of the busiest red-light districts in the country. But exactly how big was the city’s red-light district? And how did it get that way? That’s what we try to find out in Episode 1 of "Running Red-Lights."

Sometime this summer, Fannie Porter's brothel — where Butch Cassidy and the Sundance Kid hid out — lost its historic designation.