İzmir: what to see and where to eat
Everything below comes from open data and each row says where it came from. We have not been to any of these places and we do not rank them.
Things to see

Georges Jansoone JoJan / Public domain
Smyrna
ancient Greek city, located in present day İzmir, Turkey

Atatürk Mask
sculpture in İzmir, Turkey

Kadifekale
castle in İzmir, western Turkey
St. John's Cathedral
cathedral in İzmir, Turkey

Saint Voukolos Church
church building in İzmir, Turkey

Saint Polycarp Church
church building in İzmir, Turkey

İzmir Archaeological Museum
museum in İzmir, Turkey

Kültürpark
public park in İzmir, Turkey

Unknown authorUnknown author / Public domain
St. Stepanos Church
Armenian church in İzmir, Turkey

Agora_vue_générale.jpg: Didier Laroche derivative work: IgnisFatuus (talk) / CC BY-SA 3.0
Agora of Smyrna
Square in the classical-era city of Smyrna
Atatürk, His Mother and Women's Rights Monument
monument in İzmir, western Turkey
Atatürk Monument
monument in İzmir, western Turkey
Places to eat
Atadan Fırın
Food: cake, pastry, dessert
Dodo Pizza
Food: pizza
Léone Patisserie & Boulangerie ALSANCAK
Food: french
Mado
Food: coffee shop
Schnitzel Factory
Food: chicken, schnitzel
Şımarık Meyhane
Food: brasserie
Best Coffee To Go
Food: coffee shop, sandwich
Buckin Coffee
Food: coffee shop
Cute Gastro Pub
Food: burger, regional, pizza
Marache Coffee
Food: bagel, bubble tea, cake, coffee shop, ice cream, sandwich, tea
Nokta Balık Pişiricisi
Food: fish, seafood
By Melly
Food: breakfast
Café Descanso
Food: coffee
Göveçte Yöresel Yemekler
Food: turkish
Starbucks
Food: coffee shop
The Blue Cafe
Food: coffee shop, sandwich
Birinci Kordon Balik Restoran
Food: fish, seafood
Kemeraltı Kent Lokantası
Food: turkish
Opening hours and tickets: OpenStreetMap contributors. Each one shows the day a volunteer last wrote it down, so check the official site before you set out.