Knoxville, TN: then and now

4 real landmarks in Knoxville, each with an old photo you can fade into today's view. Find four landmarks around Knoxville. 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.

• Southern TerminalA railroad station that sits 15 feet below the street.
• Gay StreetThe main street Knoxville has used since the 1790s.
• Blount MansionA wooden house once slated to become a parking lot.
• Old Customs HouseThe city's first federal building, now a history center.

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