Figure 7.20: Religious pilgrimage sites.

Figure 7.20: Religious pilgrimage sites. Visitors number in the millions annually and can provide a holy site’s main source of revenue. (a) The grotto where the Virgin Mary appeared to a girl in 1858 in Lourdes, France. (b) The Temple of the Emerald Buddha in Bangkok, Thailand. (c) The Great Mosque in Touba, Senegal.

(a: Franz-Peter Tschauner/dpa/Corbis; b: Devin R. Morris/Corbis; c: Richard List/Corbis.)