Carnival

Google definitions:
1.
a period of public revelry at a regular time each year, typically during the week before Lent in Roman Catholic countries, involving processions, music, dancing, and the use of masquerade.
"the culmination of the week-long carnival"
synonyms: festival, fiesta, fete, gala, jamboree, celebration, fest
"the town's carnival"
Another term covered is that of 'Mardi Gras' also known as 'Fat Tuesday' referring to the events of the Carnival celebrations beginning on or after the Christian feasts of the Epiphany (Three Kings Day) and culminating on the day before Ash Wednesday.

2.
NORTH AMERICAN
a traveling amusement show or circus.
synonyms: fair, amusement park, fun fair, amusement show, circus, big top, midway
"he worked at a carnival"