What are the Must-See Attractions Near Union City?

Even though school has started, there is still a bit of summer left when guests might come to visit.  Also, the holidays are on the horizon and your host duties might include more than cooking a turkey or wrapping a gift.

After you’ve spent a day or two wine tasting or walking around San Francisco, how do you entertain your out-of-town guests?

According to travelers who post comments on TripAdvisor, top attractions near Union City include a trip to the Niles Canyon Railway and a hike in the Mission Peak Regional Preserve, part of the East Bay Regional Parks.

What are the hot spots previous visitors may have missed?  What is your favorite place to take out-of-town guests in Union City? Tell us in comments.