Paseo Montejo Mérida, Yucatán, Mexico Late in the 19th century and the early 20th Century, the area surrounding Mérida prospered from the production of henequén. For a brief period, around the turn of the 20th century, Mérida was said to house more millionaires than any other city in the world. The result of this concentration of wealth can still be seen today. Many large and elaborate homes still line the main avenue called Paseo de Montejo, though few are occupied today by individual families. Mexico 2015 807