Denver, United States of America
The Denver Botanic Gardens is a public botanical garden located in the Cheesman Park neighborhood of Denver, Colorado. The 23-acre (93,000 m2) park contains a conservatory, a variety of theme gardens and a sunken amphitheater, which hosts various concerts in the summer.
Listen to the audio guide for Denver Botanic Gardens Free on WIP — starts by itself when you arrive, even with the screen off