Must see places in Seattle and surroundings

Hi Internations Seattle!

I am Elsie from the Dallas community! My coworkers and I arrived in Seattle this morning from Dallas for a 4 day stay. Since none of us have been to WA before, I'd appreciate tips on places to visit, must try food, restaurants and after work fun (best happy hour spots)!!!
Thanks in advance and also for this beautiful weather :)

Cheers,
Elsie