20 of the most unusual attractions you must experience while traveling in Europe

This is the ultimate list of attractions you must experience during traveling in Europe. No, these are not the most famous sights, but the more hidden and unknown sides of individual cities.

Traveling in Europe - 20 "must-see" attractions

1. Croatia: Museum of Psychedelic Art in Zagreb

Croatian Museum of Psychedelic Art in Zagreb, located on the second floor of the 18th-century Raffay Palace, offers an introduction to the artwork of self-taught peasant painters from villages in the east of the country. Expect fantastically bizarre rural scenes and intricately dotted landscapes bordering on the psychedelic.

2. Denmark: Eat in Copenhagen's liveliest district

It is post-industrial on the northern edge of the harbor Refshaleøen – the most lively neighborhood of Copenhagen. The Reffen street food market offers affordable options for culinary indulgence, while La Banchina is the trendiest part of Copenhagen for sunset lovers.

3. Germany: See an avant-garde play in Berlin

Germany is the world capital of avant-garde theater, and the most famous is stunning Schaubühne am Lehniner Platz. The former cinema, built in 1928 in the Bauhaus style, became home to the radical band Schaübuhne in the late 1970s. The theater hosts first-class acting names from Germany and other parts of Europe. The performances are mostly in German, but a few are subtitled in English or French each month.

4. The Netherlands: Eat local on an island near Amsterdam

This is a dinner you will remember for a lifetime. Vuurtoreneiland is a small island in the IJmeer with a lighthouse, an old abandoned fort and a large dining room in a greenhouse. The red thread of the island is "eating in nature" - a five-course menu of fresh regional products, lovingly prepared and cooked entirely over an open fire.

5. Czech Republic: Eat, drink and dance in a former barracks in Prague

The art complex in the Czech capital, in the premises of a former barracks, attracts tourists from all over the world. In the summer, an annual cinema is hosted here, as well as a beach volleyball court. In winter, you can enjoy hot drinks and frolic on the ice rink. Within Karlín barracks you can also find a cafe in the former swimming pool and garages, which are now bars and concert spaces.

6. Ireland: Take a dip in Joyce's favorite bathing spot

Outdoor swimming pool Forty Foot attracts Dubliners all year round – even on Christmas Day. This is a place mentioned by James Joyce himself in "Ulysses". The Forty Foot used to be a traditional men-only swimming pool, but in the 1970s, that too changed.

7. Great Britain: Discover Liverpool's booming industrial district

Start-ups, street food and stunning art venues: you'll find it all in Liverpool's Coastal Triangle. Occupying an industrial area heavily bombed during World War II, the historic warehouses are now overrun with music venues, art spaces and independent boutiques.

8. Hungary: A bar in the ruins of Budapest

Take a dilapidated building with a maze of rooms, decorate it with eclectic furniture and stunning communist memorabilia, and you have the most recognizable bar in Budapest. Szimpla Kert has become the standard for nightlife in the Hungarian capital. You can find it in the Jewish quarter.

9. Italy: Explore the creepy underground cemetery in Naples

Under the heat and bustle of the streets of Naples hides an old tomb from the 17th century, when the plague threatened the death of as many as 250,000 inhabitants of the city. Although there are piles of bones in the graveyard Fontanella undeniably exciting, according to local tradition, it is supposed to care for the skulls of lost souls.

10. Turkey: Treat yourself to a full-body scrub at an Istanbul hammam

The work of the renowned Ottoman architect Mimar Sinan, Kılıç Ali Paşa Hamamı, was built between 1578 and 1583 to serve as a naval force in the Ottoman Navy. In 2012, however, it reopened its doors after extensive renovation. The hammam ritual is an unmissable experience for anyone visiting Istanbul – the hammam is open for women in the morning and for men in the afternoon.

11. Scotland: Horror in Edinburgh

Cameo is one of Quentin Tarantino's favorite cinemas, which has been in operation for more than 100 years. Horror fans are in for a treat with the All Night Horror Madness movie marathon.

12. Portugal: Sweat it out in Lisbon's most picturesque club

With two dance floors and a rooftop terrace overlooking the river, there is no more attractive night club in Lisbon than Lux Frágil. Here you can find a variety of musical events, from live band performances to unusual Sunday 'events'.

13. Spain: Flea Fair in Barcelona

Shopping at Mercat dels Encants is an experience in itself. One of the oldest flea markets in Europe is an event that demands a whole day of your time. If, of course, you want to walk between all the stalls and buy the item of your choice.

14. Portugal: Park of Contemporary Art in Porto

Every visitor to Porto simply must see the extensive museum and park Fundação Serralves. The museum building, designed by Álvaro Siza Vieira, is worth a trip in itself, as is the Art Deco Casa de Serralves, which houses the art foundation. The museum hosts some of the best contemporary art exhibitions in the world, and the permanent collection isn't bad either.

15. Great Britain: Birmingham's historic quarter

This Cinderella part of town, underwent a thorough transformation some time ago. Today, heavily renovated, it is home to many restaurants and bars. Use the historic Roundhouse as a base to explore by boat, bike or on foot.

16. Spain: Treat yourself to a beer in a former pornographic cinema in Madrid

This 700 square meter large former X-marked cinema have been converted into a cocktail bar. At the same time, they kept the projector for one-off projections. The rich cultural program of Sala Equis includes film, music and theater happenings in three spaces: the terrace by the entrance, the main bar Sala Plaza and a cinema with 55 seats.

17. Greece: Watch movies in the shadow of the Athenian Acropolis

Legendary Cine Paris, which opened its doors in the 1920s, is best known for its breathtaking view of the Acropolis. It is one of around 90 outdoor movie theaters in Athens where visitors can watch old Greek and foreign classics as well as the latest Hollywood releases.

18. Italy: Explore the world's top art collection along Venice's Grand Canal

Collection Peggy Guggenheim next to the Venetian canal, it impresses with the selected artistic taste of a rich heiress. Guggenheim purchased the unfinished building in 1949 and filled its spaces with her vast collection of 20th-century surrealism, abstract expressionism, avant-garde sculpture, cubism and more. Be sure to visit the museum's sculpture garden, full of flowering shrubs and flowers.

19: Great Britain: See some creepy shrunken heads in Oxford

Pitt Rivers is the world-renowned museum of archeology and ethnography in Oxford, probably best known for its collection of very, very small shrunken heads. The heads are part of a museum with more than half a million exhibits. Admission is free.

20. Italy: Walk along an ancient road in Rome

Appia Antica it is one of the oldest routes in the Roman Empire, and today you can walk or cycle along it. This ancient road connected Rome to Brindisi and remains one of the most picturesque areas in the city.