The Pratt Museum on Pioneer Avenue is Homer's cultural anchor and one of the better regional museums in Alaska. Exhibits cover the natural history of Kachemak Bay — the marine ecology, the birds, the marine mammals — alongside the indigenous cultures of the Kenai Peninsula and the history of Homer itself, from its coal-mining origins through the commercial fishing era. The documentation of the 1989 Exxon Valdez oil spill is particularly comprehensive; Homer was significantly affected and the museum records both the ecological damage and the community response.
The botanical garden outside displays native Alaska plants in a layout that also functions as a pleasant walking space. The museum is small enough to cover thoroughly in an hour or two, and the range from natural science to indigenous culture to contemporary community history makes it more interesting than a single-focus institution. Worth visiting early in your stay for context.