It's no coincidence that the word "muse" appears in "museum!" Museum of the Gulf Coast aims to inspire, entertain and engage its visitors, so find a place for it on your schedule.
You're spoiled for sightseeing choice when in Port Arthur. Museum of the Gulf Coast is a great place to begin here, but there are loads of other fine places to experience. Central Mall, London Bridge Park, and Babe Zaharias Golf Course are near the museum and will fill in your day nicely.