Which came first, the Eiffel Tower or the hamburger?

the Eiffel Tower came first, by 11 years. The tower opened for the Paris Exposition Universelle.

Side by side

the Eiffel Tower

Built for the 1889 World's Fair and intended to be dismantled after twenty years, the Eiffel Tower survived because it turned out to be useful as a radio antenna. It was the tallest structure in the world until the Chrysler Building in 1930. It opened in the same year Nintendo was founded, and two and a half years after the Statue of Liberty it is often assumed to predate.

the hamburger

At least four places claim it. Charlie Nagreen said he flattened a meatball between bread at the Seymour Fair in Wisconsin in 1885; the Menches brothers claimed the same year at the Erie County Fair; Louis' Lunch in New Haven claims 1900; and Fletcher Davis of Athens, Texas is credited with introducing it at the 1904 St Louis World's Fair. No contemporary document settles it. What is documented is the Hamburg steak — chopped beef, no bun — on American menus from the 1870s.