The EcoTarium is a unique indoor-outdoor museum in Worcester, MA.  Set in an urban oasis, the EcoTarium offers a chance to walk through the treetops, take a thrilling multimedea journey through the galaxy at a digital planetarium, meet wildlife, stroll nature trails, ride a narrow-gauge railroad, and get hands-on with family-friendly exhibits.  The museum is located at 222 Harrington Way, Worester and is open Tuesday through Saturday from 10: a.m. to 5 p.m.