The 1 thing you need to see in 30 museums around the world

There are so many incredible works of art to see in the world, but so little time.

Some museums are so massive that you could spend an entire day in them and still not see everything. To make your life easier, we've put together a list of the one, must-see thing in 30 of the world's most incredible museums.

THE LOUVRE, PARIS, FRANCE: While this museum is most famous for Leonardo DaVinci's "Mona Lisa," the painting is super small in real life, fenced off by a velvet rope, and really crowded. Instead, check out "The Wedding at Cana," by Paolo Veronese, a fine example of Renaissance art and located directly across from the "Mona Lisa."

THE VATICAN MUSEUMS, VATICAN CITY: For the best sight in The Vatican, all you have to do is look up. That's where you will find Michelangelo's "Sistine Chapel."

ACROPOLIS MUSEUM, ATHENS, GREECE: Check out the Parthenon Frieze at the Parthenon Gallery. It once decorated the sides of the Parthenon.