The Denver Museum of Nature & Science staffers don't just showcase history, they dig it up. In 2019, the staff helped excavate triceratops fossils from a construction site in Highlands Ranch, some of which are on display at the museum's Prehistoric Journey exhibition. Imagine learning that after a mid-afternoon joint at City Park! And if dinos don't intrigue your stoned mind, there's always the fail-safe planetarium and IMAX theater for visual fun, as well as a gem and mineral hall for you crystal-lovers out there. All told, the museum probably holds too much stimulation for a fried brain to handle, but it'll be fun to try.