The tallest monument in the Western Hemisphere, the Gateway Arch stands as a 630-foot memorial to America's westward expansion. Symbolizing the city of St. Louis and featuring a bird's-eye-view of the city and the Mississippi River, the Arch is an international tourist destination that attracts more than 4 million visitors each year.Parking and Public Transportation at the Gateway ArchThe Jefferson National Expansion Memorial, which includes the Arch, doesn't have its own parking facilities. Street parking near the monument is available but limited. Several parking garages and lots, however, are situated within a 2-block radius.The easiest way to access the Arch is via the Metrolink. Exit the train at the Laclede's Landing Station, a stone's throw from the Arch.Best and Worst Times to Go to the Gateway ArchThe general rule is, the nicer it is outside, the busier the Arch will be. On summer days when the Cardinals are in town, the Arch is especially busy.On weekday mornings during the spring and fall months, the Arch is usually filled with groups of school kids. To avoid large crowds and long waits, plan your visit for the late afternoon hours - near rush hour - when the school groups have departed for the day. Or else visit during the less crowded winter months.Admission to the Gateway ArchA ticket to the observation area at the top of the Arch goes for around 10 bucks. Tickets for children 15 and under are available in the $5 range. Discounted group rates are available for groups of 20 or more.Must See/Do at the Gateway ArchThe "Journey to the Top" – Featuring enclosed trams that swing back and forth like Ferris wheel cars as they ascend, the voyage to the top is as memorable as the views once you get there.The Old Courthouse – Not just a place to buy your Arch tickets, this historic structure (where the Dred Scott case was heard) features restored courtrooms and history galleries.Food at the Gateway ArchThe Arch View Café, located on the riverfront dock beside the Arch, features casual fare in the $10-and-under range. There are no eateries inside the Arch, but dozens of restaurants located within walking distance.Insider Tip for Visitors to the Gateway ArchEspecially during the spring and summer months, the Arch sometimes sells out of tickets to the top. Order online or call in advance to save your spot.Author's Bio: Marcus Whelchel lives, writes, and romps in St. Louis with his wife, daughter and endless stream of weird thoughts.