1. Paris: Visit the Louvre / Eiffel Tower
Free entry for anyone under 26, make sure you bring proof of age. School Teachers also gain free entry anytime. Planning your visit for the first Sunday of the month will also allow free entry to everyone. Watch the Eiffel Tower sparkle Every night in Paris you can catch the free light show at the Eiffel Tower.
2. London: Choir singing in Westminster Abbey/ Museums
Entry fee of £10 during the day, After 5.30 pm though you can gain free entry when the Abbey Choir holds “Evensong” an Anglican tradition. Many of London’s museums and galleries are free. This includes the British Museum, the National Gallery on Trafalgar Square, the National Portrait Gallery on St Martin’s Place, the Tate Modern and Tate Britain on the River Thames, and the Natural History Museum, Science Museum and Victoria and Albert Museum, all in South Kensington.
3. Athens: Climb Filopappou Hill
Climb Filopappou Hill just 15 minutes walk from the gates of the Acropolis, was known in ancient Greece as the Hill of the Muses and has 360 degree panoramic view of Athens and the Parthenon,. Entrance to the site is free and the climb isn’t that strenuous. There’s a good view of the rest of the city from the top also.
4. Madrid: Visit the Spanish capital’s museums 
Spanish capital’s best-known museums are free to enter at different times over the weekend. Museo Nacional Centro de Arte Reina Sofía. A great archaeological museum, with its main attraction being a replica of a prehistoric cave. Free Saturday Afternoon & Sundays.
5. Prague: Prague Castle
Walk through the grounds of Prague Castle Overlooking the River Vlatva and Czech capital Free to walk amongst the grounds, Be there at 12 pm and see the changing of the guard other parts such as de Arte Reina Sofía do have charge.
6. Munich: Catch the ‘Glockenspiel’ show
The “Glockenspiel” is a great way to spend 15 minutes. Catch the show twice daily at 11am and midday at the New Town Hall, located in the Marienplatz square. 32 life-size figurines act out the ‘Cooper’s Dance’, a Munich tradition.
7. Rome: Forum / Vatican Museum
There may not be much left, as it’s not been as well preserved some of the other attractions in Rome, but the Roman Forum remains one of the cities most popular sights with the oldest and most important structures of the ancient city. The forum served as a city square and central hub where the people of Rome gathered. Vatican MuseumThe last Sunday of every month the best attraction in the Vatican is free. The Vatican Museum has of the largest and extensive collection of sculptures, paintings, religious artifacts and Michelangelo’s iconic Sistine Chapel.
8. Berlin: East Side aRT Gallery / Reichstag 
One of Berlin’s most interesting attractions, the East Side Gallery free to wander around. The Wall of Art is along one of the best preserved sections of the infamous Berlin Wall. Close to the city centre, the stretches for around 1.3km and is covered in works of art by over 100 international artists. Also check out the Reichstag, Topped of with a large glass dome it easily distinctive among the rest of East Berlin’s buildings, the Reichstag has been home to the Bundestag (German Parliament) since 1999. Visitors can visit the roof terrace of the building which boasts amazing views of the city
9 . Belfast: Visit Belfast Castle
Built in 1870 and Offering the very best views of Belfast this elegant sandstone building is surrounded by stunning grounds and mountain trails and is perfect for a day out. The visitor centre details the history of the castle, it’s inhabitants and the surrounding area and entry is free!
On Tuesday afternoons from September to May, all show are free at Boekmanzaal,Opera House’s Muziek theater. Litsen to the Netherlands Philharmonic Orchestra, other free concerts can also be heard each Wednesday afternoon between September and June at the Concertgebouw. Tuesday and Wednesday shows start at 12.30pm. It’s a great way to catch some great classical tunes whilst in Amsterdam.
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