MIT Museum is at 265 Massachusetts Ave. near the north side of the Massachusetts Institute of Technology campus. On the first floor is the Mark Epstein Innovation Gallery, which features changing displays about both current and past MIT research. The second floor offers several different exhibitions, including Robots and Beyond: Exploring Artificial Intelligence at MIT. Interactive displays, interviews with designers and robotic relics give visitors a behind-the-scenes look at the branch of computer science. Another popular gallery showcases pieces from the museum's extensive hologram collection, said to be the world's largest.