Bonnie Springs is a great adventure for the family. You can ride on an old train, watch a gunfight -- which is part of a wild west show, ride a horse, go to the petting zoo and watch some of the animals in their cages. You can eat at the restaurant and sit near the picture window to watch the ducks. You can take home souvenirs.
PROS: Fun for all ages. Inexpensive.
CONS: 1/2 an hour from Las Vegas. You'll need a car or shuttle.
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