Graham Greene "was commissioned to write a book on the religious situation" in Mexico in 1938, which resulted in The Lawless Roads travel memoir, as well as inspiring his novel The Power and the Glory.
"I loathed Mexico" admits Greene, and after reading of his experiences it's no surprise. He travels by bus, train, boat and plane, but most memorably over the mountains by mule. He stays on the border, visits Mexico City, and promised himself to spend Holy Week "in Catholic Las Casas, to see how it was observed in a city where the churches were open - so I was told - but the priests not allowed inside." His travels are filled with mosquitos, black beetles, discomfort and dysentery, and yet on his return home Greene tried to remember his hatred. Like many travellers he finds "a bad time over is always tinged with regret."