In honor of Cinco de Mayo, unusual destinations from a giant crystal kingdom to an underwater collection of sculptures 

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A church sits atop the pyramid of Cholula in front of Mexico's snow-capped Popocatepetl volcano. Imelda Medina/Reuters.


Ah, Cinco de Mayo, a day generally reserved for sombreros and margaritas. This year, celebrate the Mexican holiday with The Atlantic and Atlas Obscura as we visit Mexican sights that go beyond beaches and all-inclusive resorts. Featured in this edition of "7 Wonders of the World":

  • An Aztec temple, the largest man-made structure in the world, buried beneath a Spanish church
  • A gargantuan crystal kingdom
  • An island filled with hundreds of hanging, decomposing, decapitated dolls
  • An underwater art project that doubles as a massive artificial coral reef to help regenerate the damaged ecosystem
  • The stoutest tree in the world
  • A huge hole that looks down onto an underground beach populated with sea lions
  • A cemetery where once a year the dead are taken out for a cleaning