St. Louis City operates about 105 parks, St. Louis County operates about 60 parks.  Some sites are operated by the State.  Some are Federal.  A few are operated as businesses. 

Sites - Attractions (many free or inexpensive, always call ahead for hours and fees)

• Jefferson National Expansion Memorial
  • The Gateway Arch
  • Museum of Westward Expansion
    • Widescreen Odyssey Theatre
    • Tucker Theatre - showing “Monument To The Dream”
  • The Old Court House site of the “Dred Scott” case in 1847,1850 and the “Virginia Minor” case in the 1870s
    • Old Court House Theatre
  • JNEM Library
• (The Old Cathedral) The Basilica of St. Louis, King of France
• Aloe Plaza fountain/sculpture “Meeting of the Waters” by Carl Milles
• Gateway Foundation’s City Garden on Market Street between 8th and 10th Streets
• Soldier's Memorial
• Union Station
• St. Louis Public Library
• The Fox Theater
• Saint Louis Symphony Orchestra - Powell Symphony Hall
• The Contemporary Art Museum St. Louis
• Sheldon Concert Hall
• The Pulitzer Foundation for the Arts
• Scott Joplin House
• Eugene Field House and St. Louis Toy Museum
• Chatillon-DeMenil House
• Robert G. Campbell House
• Samuel H. Cupples House
• City Museum
• Forest Park and a history.
  • Zoohistory
  • Science Center
    • OMNIMAX theater
  • Missouri Historical Society - Jefferson Memorial
  • Munyhistory
  • Art Museumhistory
  • Jewel Box
  • Also the site of the 1904 World's Fair (internal page just started)
• Missouri Botanical Garden - Shaw's Garden
  • The Climatron (rain forest), fountains, sculptures, Spink Gallery of ceramics and more
  • Tower Grove House
  • Shaw Nature Preserve (Shaw Arboretum) - 35mi. SW in Gray Summit MO
  • Butterfly House - In Faust Park
• Tower Grove Park - Gazebos
• Soulard Farmer's Market also see this 19th Century photo at the Library of Congress
• The Magic House, St. Louis Children's Museum
• Jefferson Barracks National Cemetery
• Faust Park
  • St. Louis Carousel
  • Butterfly House
  • Historic Village
  • Thornhill Home
  • Community Music School of Webster University
• Laumeier Sculpture Park
• Grant's Farm
• Frank Lloyd Wright House in Ebsworth Park - tours by appointment only
• Museum of Transportation
• St Louis Walk of Fame - many famous St. Louisans - The Loop
• First Missouri State Capitol State Historic Site
• Kemp Auto Museum
• Cahokia Mounds State Historic Site - also on the list of historic sites of the National Parks Service and a United Nations World Heritage Site.
• Katy Trail
• Lewis and Clark Bicentennial
• The Great River Road and The Sam Vadalabene Bike Trail
• The Wabash Frisco and Pacific Railroad Association, Inc.
• The World's Largest Catsup Bottle
• Historic Aircraft Restoration Museum
• Anheuser-Busch Brewery Tours
• Weldon Springs Site - US DOE's educational and research programs
• Hermann MO (day trip)
• Springfield IL (day trip)
  • Abraham Lincoln Presidential Library and Museum
  • Lincoln's New Salem State Historic Site
• Jefferson City MO (day trip)

St. Louis was once (1870) the fourth largest city in the U.S.  Smaller only than New York, Philadelphia and Brooklyn.