This summer, you may want to consider taking a cruise on one of the cool riverboats that reside here in the state of Iowa! Here are four of the best, courtesy of the website Travel Iowa:

Riverboat Twilight

Designed and built in 1987 by Captain Dennis Trone, the Riverboat Twilight is a replica of classic Victorian steamboats that travels the Mississippi River. The website reads, "fast, elegant and quiet as she slips through the water, there are three decks with comfortable dining salons and sundecks with lounge chairs to sightsee or snooze in the sun." In addition to 90-minute sightseeing cruises, Riverboat Twilight also offers one-day and two-day river cruises that depart from LeClaire, Iowa. Cruises are available on select dates from May through October.

Celebration River Cruises

With Celebration River Cruises, you can take a trip on the Mississippi River on the Celebration Belle, a 750 passenger paddlewheel boat. There are a variety of different trip options, including lunch cruises, dinner & dancing cruises, themed cruises, fireworks cruises, all-day cruises, and overnight cruises. Cruises on the Celebration Belle typically start in the Quad Cities, but it also has ports in Dubuque and LeClaire. It operates from April through October.

Queen II

Arnolds Park, Iowa is home to the Queen II, a steamboat built in 1986 that travels around West Lake Okoboji. The boat can hold up to 200 people and features an open-air upper deck and enclosed lower deck. Trips last one hour and run Memorial Day through Labor Day.

Lady of the Lake

Lady of the Lake is an authentic paddle wheel excursion boat on Clear Lake, "a natural, spring-fed lake located in Clear Lake, Iowa, just minutes off I-35 and I-90." The boat is open for both private and public cruises from Memorial Day weekend through the month of September. Public cruises last around 90 minutes and the captain gives details on the boat's history, the lake, and sites located around the lake. They also host 4th of July fireworks cruises and Pirate Party cruises.

LOOK: Stunning vintage photos capture the beauty of America's national parks

Today these parks are located throughout the country in 25 states and the U.S. Virgin Islands. The land encompassing them was either purchased or donated, though much of it had been inhabited by native people for thousands of years before the founding of the United States. These areas are protected and revered as educational resources about the natural world, and as spaces for exploration.

Keep scrolling for 50 vintage photos that show the beauty of America's national parks.

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