If you are traveling with children, I recommend visiting DinoPark and the zoo (Nad ZOO 1). A single ticket for an adult costs 240 CZK (€9.5), for a child 3-15 years old 170 CZK (€7).
Travel: 1 hour 25 minutes by train or 1 hour by bus.
Round trip ticket price: train - 210 kronor (€8), bus - 180 kronor (€7).
How to plan your route and buy tickets
Bookmark the website (there is also an IDOS mobile app for iOs, Android and Windows Phone) to find out how to get from point A to point B in Prague and beyond.
Let's say you want to visit Dobris Castle. It is located in the town of the same name, the name of which is spelled Dobříš in Czech. If you are interested only in trains, choose Trains in the Timetable drop-down menu, buses - Buses, any option - Trains + Buses. In the From field enter Praha (if you want to start from a certain station, choose its name: Praha-Smíchov, Praha-Holešovice, etc.), in the To field enter Dobříš. Select the date of your trip and the desired departure or arrival time. Click on the Search button and you will get a list of options.
Next, click on the Buy! button next to the selected option and, if the route is operated by České dráhy (which will be the case in most cases), you will be taken to the website. Here English is also available, the icon to change the language is in the upper right corner. Choose the class of carriage (the cheapest seats are in the second class), specify all passengers, including children of any age (if you are not traveling alone, click on the Add another button and choose the desired item from the drop-down list). Click on the Display price button and go to the page where the one-way ticket price will be indicated and you will be able to enter the return trip parameters.
If everything is satisfactory, click on the Buy button, choose additional options (bicycles, oversized luggage and dogs are charged separately), pay and receive an e-mail with the ticket in pdf-format. You don't have to print it out, just show the QR code on your smartphone screen to the checker.
Why do I recommend buying tickets online? In this case, you can book a specific seat on the train for free (this only applies to travel within the Czech Republic) and you are guaranteed a seated ride.