Kensington Palace – home to the Duke and Duchess ... Hyde Park is open from 5 a.m. to midnight, while the gardens open at 6 a.m. daily and close at dusk (which varies by season).

The Brooklyn Botanic Garden in New York City lands at No. 50 on the list. It’s a 52-acre urban garden in the heart of the city with areas like the Cranford Rose Garden, Japanese Garden, and Woodland ...