10 US Greenhouses with a twist

Gardens Under Glass, Cleveland: Urban eco-village inside a mall; transforms shopping spaces into sustainable greenhouse environments and eco-retail

Biosphere 2, Arizona: Earth systems science facility; massive greenhouse structures mimic Earth's biomes for research and education

The Land Pavilion, Florida: EPCOT's greenhouse with futuristic farming; hydroponics, aquaponics, and vertical growing techniques on display

Volunteer Park Conservatory, Seattle: Historic greenhouse housing exotic plants, plus carnivorous plant exhibit showcasing nature's predatory flora

Krohn Conservatory, Cincinnati: Butterfly show where visitors walk among thousands of free-flying butterflies in a themed, changing greenhouse setting

Rawlings Conservatory, Baltimore: Features world desert plants alongside tropical flora, housed in an architectural wonder of glass and steel

The Amazon Spheres, Seattle: Amazon's office space with a difference; three biodome greenhouses for employees to work amid exotic plants

Phipps Conservatory, Pittsburgh: Greenest greenhouse in the world; LEED-certified with a focus on sustainability, education, and research

Magic Wings Butterfly Conservatory, Massachusetts: Greenhouse primarily for butterflies but also hosts curious creatures like reptiles and birds

Garfield Park Conservatory, Chicago: Houses "Fern Room" replicating prehistoric Illinois, showing what the area looked like millions of years ago