Kuala Lumpur: 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

Batu Caves
limestone hill that has a series of caves and cave temples in Gombak, Selangor, Malaysia

National Museum of Malaysia
museum in Kuala Lumpur

Islamic Arts Museum Malaysia
art museum in Kuala Lumpur

Ural Anonymous / Public domain
Kuala Lumpur Bird Park
public aviary in Kuala Lumpur, Malaysia

Phalinn Ooi from Kuala Lumpur, Malaysia / CC BY 2.0
Aquaria KLCC
oceanarium in Kuala Lumpur
National Zoo of Malaysia
zoo in Malaysia

CEphoto, Uwe Aranas / CC BY-SA 3.0
National Monument
monument in Malaysia

Batu Caves Murugan Statue
Hindu God Statue in Malaysia

Perdana Botanical Gardens
park in Federal Territory of Kuala Lumpur

Istana Budaya
opera house in Kuala Lumpur

Thean Hou Temple
Chinese temple in Kuala Lumpur

User:Two hundred percent. / CC BY-SA 3.0
St. John's Cathedral
cathedral near Kuala Lumpur, Malaysia
Places to eat
Artisan Roast Sentul
Food: cake, coffee shop, sandwich, tea
Bijan Bar and Restaurant
Food: malaysian
Ciccio
Food: pizza, pasta, salad, seafood
Dining in the Dark KL
Food: international
El Cerdo
Food: spanish
Hakka
Food: chinese
Halab Restaurant
Food: arab
Moontree House
Food: cake, coffee shop
Nam Heong
Food: chinese
Sao Nam
Food: vietnamese
Sassorosso
Food: italian, wine
Yut Kee
Food: chinese
Anjappar
Food: indian
BBQ Nights
Food: kebab, barbecue
Bacha Coffee
Food: viele Kaffesorten, Internationale Küche
Bavarian Bierhaus
Food: german
Breakfast Thieves APW Bangsar
Food: breakfast
Fuego Troika Sky Dining
Food: latin american
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.