Take in the view from the sky-high heights of the Willis Tower, the second-tallest building in the United States. From the 103rd floor, look out over 4 states and the Windy City's urban sprawl, and then test your vertigo on a glass balcony to peer down at the streets and skyscrapers of Chicago beneath your feet.

Step into an elevator and be whisked to new heights in just 60 seconds, waiting for the ear-popping sensation as you ascend to the Skydeck at the Willis Tower. Standing 1,353 feet (412 m) above the Midwest metropolis, the Willis Tower's steel-framed structure was specifically designed to withstand the city's infamous wind—you may even feel a slight sway if visiting during a blustery spell.

From this elevated vantage point, marvel at a panorama that stretches to include 4 neighboring states and the sparkling waters of Lake Michigan. Scan Chicago's iconic skyline, and venture out onto The Ledge—a glass balcony extending from the tower's façade. From this vantage point, it's the skyscrapers that are looking up at you.

Once you've taken in the cloud-level vistas, snag a seat for a showing of Reaching for the Sky, a short movie that traces the Chicago's rise to the top of the architectural world. After the flick, spend some time engaging with the digital floor displays and fascinating trivia games before heading back to ground level.

Uncover the Windy City’s exceptional architecture as you stroll between historic department stores, luxurious hotels, and towering office buildings. With a volunteer from the Chicago Architecture Foundation leading the way, explore the work of Chicago’s ambitious architects on this walking tour.

Wander up and down Michigan Avenue and State Street as you discover the beautiful buildings and parks featured in the Loop, downtown’s vibrant commercial district. Check out the modern sculptures, innovative art installations, and wide lawns of Millennium Park before arriving at the dignified features of the Art Institute of Chicago. Learn how this Beaux-Arts-style structure was built in preparation for the 1893 World’s Fair.

Just before the turn of the century, architects were also busy at work designing Marshall Fields’ newest retail location, now owned by Macy’s. Head over to this this classic example of neo-Renaissance style and admire the iconic bronze clocks at its corners.

Continue on to the Reliance building, whose early adoption of large plate glass windows help earn it a coveted place on the National Register of Historic Places. Nearby, at the Sullivan Center, hear stories about famed architect Louis Sullivan before wrapping up your excursion in front of the Palmer House Hilton, a renowned hotel which has been rebuilt 3 times, once after tragically burning down in the Great Chicago Fire of 1871.

Experience the "top tour in Chicago and one of the top ten tours in the U.S." according to TripAdvisorusers. The Chicago Architecture Foundation River Cruise is a must for out-of-towners and Chicagoans alike. CAF-certified volunteer tour guides—called docents—interpret more than 50 buildings along the Chicago River. You'll find out how Chicago grew from a small settlement into one of the world's largest cities in less than 100 years. In 90 minutes, get the real story on Chicago architecture and its history.

Daily admission for all open swim times (excluding lap swim) is $10 or by free with an ALL ACCESS POOL PASS. Cash and Credit are accepted. Combination Ice Arena and Pool passes are on sale for $90 for Residents and $150 for Non Residents until May 6th. Individual Pool Passes are on sale for $50 for residents ($62 beginning May 7th) and $80 for non-residents ($94 beginning May 7th).

Navy Pier is the People's Pier, Chicago's lakefront treasure, welcoming all and offering dynamic and eclectic experiences through partnerships and programs that inspire discovery and wonder.