Northeast Iowa is one of the state's lesser-known regions, packed with small towns and beautiful wonders - but no major metropolitan areas as you make your way up the banks of the Mississippi. That makes it the perfect place to discover some great surprises on a one-day day trip. First, in Edgewood, you'll find what might be the best-hidden cave in Iowa, a wonder dating back to ancient times. From there, it's on to one of the oldest hotels in Iowa for a meal in a truly unforgettable experience. The best part is, you'll likely have these fascinating locations all to yourself - that is, until you start telling your friends about this one-of-a-kind day trip. We think it's one of the best day trips in Iowa, and we bet you'll agree!

Bixby State Preserve in Edgewood is one of Iowa's last natural havens - and it has a great hidden secret.

You can spend hours exploring the peaceful grounds here, but there's one section that stands out as a must-visit spot.

There are many hidden passages here, but only one leads where you're going.

Welcome to the historic ice cave above a network of sinkholes, which creates a unique air effect in the area.

During winter and spring, warm air rises from the sinkholes and draws cold air to be drawn into the ice cave fissures. This creates ice along the cave walls and a unique ecosystem around the cave.

From there, it's time to head about eight miles east to the tiny town of Strawberry Point, home to the century-old Franklin Hotel.

The old-fashioned dining room is now home to a casual cafe, where guests and visitors can stop in for lunch.

The vintage feel of the location is only enhanced by the old-school dry-erase board advertising the lunch specials.

The specialty is hearty country cooking, which can be had at the restaurant or to go.

Whatever you do, you shouldn't leave without trying the restaurant's signature strawberry pie. What other dessert would you have in Strawberry Point?

Have you visited the Franklin Hotel's restaurant or seen this hidden cave in Iowa? Tell us about your experience on one of the best day trips in Iowa in the comments section. If you're planning a meal or a stay at the Franklin Hotel, make sure to visit the Franklin Hotel website and the Franklin Hotel Facebook page before you go. If you're looking for a larger cave to explore, make sure to learn about how to explore the Maquoketa Caves safely before you embark on this adventure! And if it's going to be a long drive to make it to this corner of Iowa, make sure you're stocked up with all your favorite road trip snacks.