When trying to find synonyms for the phrase "international meeting place," several options come to mind. The first one is to describe the location as a "global hub" - a term that is often used to depict bustling and active places, such as airports or big cities. Another option is to use the term "crossroads," which is often associated with places where different cultures and ideas intersect. "Confluence" is another good option, as it provides the imagery of different streams coming together to form a larger body of water, thereby alluding to the convergence of diverse perspectives. Finally, "melting pot" - often used to refer to countries with diverse cultural backgrounds - is an excellent synonym that evokes a sense of harmony and unity.