Some of the obvious tourist-y ones:
- Space Needle,
- Pike PlaceMarket,
- Seattle Underground Tour,
- IMAX Theatre,
- Pacific Science Center,
- Seattle Children’s Museum,
- Experience Music Project museum,
- Seattle Aquarium,
- Ferries (to Bainbridge Island, Bremerton, etc.),
- Museum of Flight,
- Boeing Tours (in Everett),
- Snoqualmie Falls,
- Woodland Park Zoo,
- Gas Works Park,
- Kerry Park (Queen Anne’s offering for great views!!!)
– 
Art: First Thursday of the month many galleries (especially Pioneer Square) offer free admission to enter.
Chocolate Tours: Boehm’s Chocolate Factory in Issaquah offers free tours (reservations required),
Theo’s Chocolates in Fremont ($5/person) for afternoon tours
Summer Festivals: Bite of Seattle, Bumbershoot,Seafair,Northwest Folklife
Farmer’s Markets throughout the summer – Lake City, U-District, Phinney, Magnolia, Broadway, West Seattle, Columbia City
Farms: Biringer Farms, Stocker Farms, and Remlinger Farms both offer fruit picking and family events throughout the summer and year.
Gardens: Woodland Park Rose Garden, Volunteer Park botanical gardens, Washington Park Arboretum, Japanese Garden (Arboretum), Bellevue Botanical
Improv: Jet City Improv is a clean and fun audience-led comedy improve group. Shows are late nights Fridays and Saturdays in the U-District.
Movies: Free outdoor movies at Gasworks, Marymoor Park, or in Fremont.
Music: Free evening recitals put on by UW’s Music Department, Magnuson park offers free evening concerts (and plays) on Fridays or Saturdays during the summer
Puppets: Northwest Puppet Center at 91st & 15th Ave houses the Carter Family Marionettes and has shows many Saturdays.
Rock Climbing: Near Husky Stadium at the Waterfront Activities Center, at Marymoor Park in Redmond, at Stone Gardens in Ballard, REI Store in Downtown
Seattle,
Water fun: Rent canoes, paddle boats, or rowboats from UW’s boathouse and paddle around
Just Jenn .... Bi-monthly blog 