For even the most city citizens, a quick escape into nature is always a welcome breath of fresh air. Try looking for an urban garden nearby — they often hide themselves just around the corner. Click here to know more of the coolest gardens in cities around the world.

Sky Garden   As London's highest public garden, this social space offers splendid 360-degree views of the city. With a restaurant, observation decks and beautiful plant life, there is something for everyone in this city-center escape from urban life.

The BeltLine   In a massive, 22-mile loop (环线) around the city, the BeltLine connects many Atlanta neighborhoods with parks, trails, restaurants and art shows. Although it is still under construction, the sections that are open to the public act as alternative space to enjoy the outdoors.

Jardins de Rubió i Lluch   This walled, shady garden is in the courtyard of the historic Hospital de la Santa Creu. Decorated with lilac and mandarin trees — and string lights in the evenings — this small garden square is the perfect place to sip a coffee away from Barcelona's crowded atmosphere.

Dumbarton Oaks   The garden at this historic estate in Georgetown was listed as one of the 10 best gardens in the world by National Geographic in 2014. It has both a formal, carefully manicured (修剪整齐的) garden as well as a naturalistic garden — allowing visitors the ability to choose what they want to see.