San Diego, CA: then and now

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

• Hotel del CoronadoA giant wooden hotel by the beach, built in a land boom.
• Mission Basilica San Diego de AlcaláCalifornia's first mission, burned once and rebuilt five times.
• Botanical BuildingA giant garden house made of strips of wood, built for a fair.
• Casa de EstudilloAn adobe house that a novel made famous 57 years after it was built.

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