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.

What comes to mind when you think of a museum? Valuable exhibits? Relaxed atmosphere? Here let's encounter some special museums.

The Museum of Bad Art based in Boston, Massachusetts, will bring you a quite different visual experience. As its name implies, all pieces have made their way to the museum for being too bad to be ignored.

All the paintings have been found in yard sales, rescued from the trash or donated to the museum. When viewing such a large collection of failed art, be prepared to laugh your head off.

Established in 1984 and opened to the public in 1987, the Luoyang Ancient Tombs Museum sits in a complex of grand buildings in the architectural style of the Han Dynasty.

The distinctive museum consists of two sections. The aboveground part features models of tombs from the Stone Age to the Han Dynasty. The underground one contains 22 tombs from Henan Province. The tomb of Emperor Xuanwu of Northern Wei is the highlight of the museum.

Fancy an undersea exploration but have no idea where to go? Then the Underwater Museum at the bottom of Lake Grublsee in Austria can be a good choice.

This incredible museum is perfect for adventurous divers, which surely gives visitors a unique experience. It houses not only copies of ancient people and cultural relics, but also fun, strange pieces like the Statue of Liberty, aliens and skeletons (骨架).

Another strange museum is the Upside Down House in St. Petersburg. It features an apartment where everything is turned upside down.

When you walk into the house, you will feel quite confused and find the entire museum very impressive. With each item in the apartment turned head over heels, you would experience the illusion (错觉) that comes with standing on the ceiling.

When you travel to Manhattan, here are some hotel recommendations.

The hotel is special because of widespread works by Brooklyn artists. The 116 rooms are valuable and Manhattan is only 20 minutes away by taxi or subway. The environment makes it feel urban—the hotel is by a public housing project while the nearest commercial street is under tracks—but Bushwick’s best bars, cafes, and restaurants are nearby.

Doubles from $99, room only. Tel: 718 388 4433

This is the first US location for a Netherlands-based concept hotel chain—CitizenM. You can check in by yourself here via touch screen “MoodPads”. There’s a rooftop bar, a 24-hour grab-and-go cafeteria and an area with public iMac workspaces. Although New Yorkers avoid nearby Times Square, all the lights, cameras and action can make it a fun tourist experience.

Doubles from $170, room only. Tel: 212 319 7000

Visitors eager to stay in the heart of Manhattan should try one of the inexpensive rooms at this hotel. Rates differ from great value to expensive; some start from as low as $179 a night. Rooms are small but tasteful, with nice decorations. Some have close-up views of the Empire State Building.

Doubles from $199, room only. Tel: 212 719 4100