Dictionary.com's Word of the Year is...
pertaining to a carnival, esp. to its wildness and revelry
A carnivalesque atmosphere is often depicted in art and literature.
carnival + (burl)esque
1540s, "time of merrymaking before Lent," from French carnaval, from Italian carnevale "Shrove Tuesday," from older Italian forms such as Milanese *carnelevale, Old Pisan carnelevare "to remove meat," literally "raising flesh," from Latin caro "flesh" (see carnage) + levare "lighten, raise, remove" (see lever (n.)). Folk etymology is from Medieval Latin carne vale " 'flesh, farewell!' " Meaning "a circus or fair" is attested by 1931 in North America.