What was the first college ever built in world?

There's no single definitive answer to the question of the very first college ever built. The concept of a "college" evolved gradually over time and in different places. What constitutes a "college" also depends on the definition used (a specific institution, a type of educational institution, etc.).

However, some of the earliest institutions that could be considered precursors to modern colleges include:

* The University of Al Quaraouiyine (Fez, Morocco): Often cited as the oldest existing, and continually operating, educational institution in the world, founded in 859 CE. While initially focused on religious studies, it expanded to encompass a wide range of subjects. Whether it fully fits the modern definition of a "college" is debatable.

* Various ancient academies in Greece: While not colleges in the modern sense, institutions like the Academy founded by Plato (circa 387 BCE) and the Lyceum founded by Aristotle (circa 335 BCE) provided advanced education and fostered intellectual discourse.

The evolution from these earlier institutions to the structured colleges we know today was a lengthy process spanning centuries and different cultures. Therefore, pinpointing a single "first" is difficult and depends heavily on the criteria used.