Quad City Botanical Center

The Quad City Botanical Center is a set of botanical gardens located next to the Mississippi River at 2525 4th Avenue, Rock Island, Illinois. It is open daily except major holidays; an admission fee is charged.

The center opened on June 20, 1998. Its gardens include:

Sun Garden conservatory - includes sweet acacia, allspice, arrowhead, bamboo, banana, bird of paradise, bromeliads, cacao, cardamom, cassava, coconut, coffee, ferns, frangipani, Arabian jasmine, lychee, orchids, palms, papaya, papyrus, pineapple, sapodilla, vanilla, and ylang-ylang, as well as a 14-foot waterfall, reflecting pools with koi, and a 70-foot skylight.

Source: Wikipedia