Cost: $15-$20

What to expect: Ships of all shapes and sizes, but mostly big, pirate-like vessels rolling in on Lake Michigan.

Why to go: In addition to boarding the ships, there are also plenty of kids activities on Navy Pier all weekend.

Additional info: General admission tickets are $14 for adults and $8 for kids age 3-12. Boarding tickets are $19 for adults and $14 for kids.