The best spectacled bear exhibit on the planet is arguably the one at the Zurich Zoo (which they share with coatis), but the Oakland Zoo's sun bear habitat is also very impressive. The sheer size of the enclosure must make it difficult to spot the small bears.
@mstickmanp. I've posted some pictures of the Sunbear exhibit at the Berlin Animal Park, so now you can compare this paradise for sunbears with a black hole for sunbears...