Portland, Maine: then and now

4 real landmarks in Portland, Maine, each with an old photo you can fade into today's view. Find four landmarks around Portland, Maine. At each one, check in to earn its badge, unlock its story, and collect a Time Card. Do them in any order. Everything stays on this phone.

• Longfellow MonumentA bronze poet watching a busy square.
• Portland ObservatoryA seven-story wooden tower that helped ships talk to shore.
• Wadsworth-Longfellow HouseThe oldest standing building on the peninsula, and a poet's childhood home.
• Portland City HallThe fourth city hall, after the first three burned or were replaced.

Written from sources; not yet walked on site unless a stop says otherwise.