Summer's coming to an end, but that doesn't mean you need to become a shut-in. Step outside of your box and challenge yourself this fall. Here are six adventures that promise to raise your heart rate as you explore Chicago's sights and sensations in a totally new way.

Kayak the Chicago River

Chicago Kayak

Paddle through the reflection of the city lights as you kayak the Chicago River at night on a three-hour guided trip. Kayak Chicago is Chicago's premier full service outfitter, offering top quality guided instruction and trips with fully certified instructors and guides. This nighttime tour shows a different, peaceful side of Chicago, when the city settles in for the night. Daytime guided trips are also available.

Join the Circus and Master the Flying Trapeze

The Aloft Loft is Chicago's premier teaching, training and performance space for the aerial and circus arts. Located on the near west size, its 8,000 square feet of studio space make it the third largest circus training space in the U.S. Join a beginners' class to learn about the circus art of your choice, from b trapeze to  tight wire - no experience necessary. You'll truly amaze your friends and family with your new skill while also getting a great workout! For more information, visit aloftloft.com.

Conquer Your Fear of Heights with a Forest Canopy Tour

Canopy Tours

Lake Geneva, WI, a popular weekend getaway spot for Chicagoans just across the Illinois border, is now home to an exciting eco-adventure outfitter: Lake Geneva Canopy Tours offers  fully guided eco-adventures in the canopy of the forest. On the 2 to 2½ hour fully guided canopy tour, you'll traverse eight exhilarating zip lines, cross five SkyBridges, including one of the longest in the lower 48 states, and ascend 3 spiral stairways, as well as a one-of-a-kind "floating" double helix stairway which wraps around a beautiful Ash tree. Click here to book your treetop adventure now.

Set Sail on a Lake Michigan Pirate Adventure

Tall Ships

Are you ready for a swashbuckling Lake Michigan adventure? Grab your life vest (and your parrot) and head over to Navy Pier to hop aboard the Tall Ship Windy, a 148-foot traditional four-masted topsail schooner, for a Real Pirates of the Inland Seas cruise. Learn more about Lake Michigan's pirating past as you cruise the lake on this magnificent ship. Tickets start at $24 for adults and $10 for children.

Set off on a Bikes, Blues and BBQ Gourmet Bike Tour

Osaka Garden

Explore the best historic sights and eateries in the south side neighborhood of Hyde Park, home of the University of Chicago - by bike! You'll pedal past the Obama residence, the Osaka Garden (pictured), Rockefeller Chapel, Frank Lloyd Wright's Robie House, and more, stopping at some of the best BBQ joints along the way.

Explore the Paranormal Side of Chicago

Try your hand at ghost spotting on a nighttime, interactive tour of Chicago's haunted history. You'll visit the city's most supernaturally active sites by bus while learning more about Chicago's spooky, tragic, and paranormal past. Bring an open mind and a camera - you just might spot a legendary ghost.

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