Traditionally it is considered that 'One day in Paris, ..London, ...Rome and so on tour' is not very expensive sight-seeing and even cheap european vacations. If you want to see much during a short period of time, saving on hotel room and luxury dining, be ready to work hard and experience all that capitals could offer during one day staying aimed to have cheap european vacations.
For the first time visitor, it is advisable to see all the major sights in this or that European city. Like, in London one should visit Buckingham Palace, St Paul's Cathedral, Westminster Abbey, Big Ben and the Houses of Parliament, the River Thames and the Royal Parks, Trafalgar Square, Piccadilly Circus, the Horse Guards, the Changing of the Guard, Tower Bridge, the Tower of London and the Crown Jewels. Also see the City, the original site of London, with the Bank of England and Guildhall.
Being in Paris for one day (during your cheap european vacations) take a panoramic tour with Notre-Dame, Eiffel Tower and Montmartre. Discover the monuments which have made Paris famous throughout the world: Concorde Square - Louvre Museum - Notre Dame Cathedral (stop and free time) - Hotel de Ville - Latin Quarter - Arch of Triumph - Champs Elysées. See Paris with a cruise along the River Seine discovering Paris and her multiple bridges from a completely different angle.
Staying in Prague for one day, experience an introduction tour to Prague. This tour will give a general idea about Prague. You will walk through the Prague castle, the Lesser Town, over the Charles Bridge to the Old and the New Town. You will not miss the Astronomical Clock or the Cathedral of St. Vitus. You may take a break for coffee , beer or little shopping on the way, if you want.
There are lots of travelers which save money and have rather cheap european vacations seeing Europe by their car (or renting a car) or combining in groups travelling by bus with a guide. The advantage of such journey that you can travel from one European country to another, from north to south and vice versa and see the most of beautiful and remarkable places. Such travelers usually drive during 5-6 hours per day and the second part of the day they devote to visiting cities, museum, galleries, and restaurants in the evenings. Sleeping is supposed to be in different 3-starts hotels which are rather comfortable and pleasant for tired visitors.
"Cheap" does not mean bad, it means affordable for the certain family, for certain budget, and expectations. Do all the settlements by yourself to have budget european vacations. That means avoid considering vacation packages, unless they do not comprise word "cheap". Travel agencies and tour operators include great percent for their services on getting vizas, booking air tickets, finding hotel and other accommodations. Believe, if you can manage all this by yourself, you will save your money. You can find in Internet many offers on hotels, write a letter or send a fax and settle on the reservation directly from your office or home computer.
Consider possibility to take such offers like "Last-minute getaway" or "Buy-it-know".
Certainly, there are many disadvantages of these proposals (you can hardly plan this beforehand), especially, if you are looking for family vacation offers, however, this is the way to save money. There are many people who made this usual, and if you have free fantasy and are not limited with special wishes, why not to go to travel agency, pay reasonable sum of money, and tomorrow fly to the best vacation spot in Europe?