What prominent venue is found at Madison Square?

Madison Square is most famously associated with Madison Square Garden, a renowned multi-purpose indoor arena known for hosting a wide range of events, including concerts, sports, and other entertainment. Located at the intersection of Seventh Avenue and 32nd Street, Madison Square Garden has become an iconic landmark of New York City. Its rich history dates back to its original construction in 1962 and its current iteration, which opened in 1999, has continued to uphold its status as a central hub for both local and national events.

The other locations mentioned, while significant in their own right, do not directly share the same prominence in relation to Madison Square. The New York Library is a cultural institution located further away from Madison Square and serves a different purpose, focusing on education and literary resources. The Museum at the Fashion Institute of Technology and the Flatiron Building, though important landmarks in New York City, are distinct from the identity of Madison Square itself. Consequently, Madison Square Garden is the most recognized venue linked directly to Madison Square, solidifying it as the correct answer.