The term 'WHERE IT'S AT' is a phrase that is often used to refer to a place that is popular or fashionable. The crossword solutions for this term are EUR (3 letters), SITE (4 letters), SCENE (5 letters), VENUE (5 letters), LOCALE (6 letters), and ONSITE (6 letters). EUR refers to the European Union, SITE is a location, SCENE is an environment or setting, VENUE is a place WHERE an event takes place, LOCALE is a particular area or region, and ONSITE means AT the same location. Therefore, the phrase 'WHERE IT'S AT' can be interpreted as referring to a fashionable or popular place, event, or region.