  The large H II complex N11 in the Large Magellanic Cloud contains OB
associations at several different stages in their life histories. We have
obtained ROSAT PSPC and HRI X-ray observations, Curtis Schmidt CCD images,
echelle spectra in H-alpha and [N II] lines, and IUE interstellar absorption
line observations of this region. The central bubble of N11 has an X-ray
luminosity a factor of only 3-7 brighter than predicted for an
energy-conserving superbubble, making this the first detection of X-ray
emission from a superbubble without a strong X-ray excess. The region N11B
contains an extremely young OB association analogous to the central association
of the Carina nebula, apparently still embedded in its natal molecular cloud.
We find that N11B emits diffuse X-ray emission, probably powered by stellar
winds. Finally, we compare the tight cluster HD32228 in N11 to R136 in 30 Dor.
The latter is a strong X-ray source, while the former is not detected, showing
that strong X-ray emission from compact objects is not a universal property of
such tight clusters.
