Here are some additional one day trips outside of Prague that I would definitely recommend for the summer:

Nelahozeves castle, Dvořák’s birth house but also the new marina for a boat tour (or just a beer by the river)

Train from Masarykovo nádraží to Nelahozeves-zámek (direction Kralupy n. Vltavou, 33 min / 32 km / 46 Kč)

There is a great restaurant in the castle, we were nicely surprised (and of course try the Lobkowicz wine!). For the visit, we took the long tour but I’d recommend the visit of the second floor only – first one was not that interesting (I took it in Czech – way cheaper - and payed a small extra 60,- CZK to have a print out description of the tour).

Benátky nad Jizerou, the castle and the toy museum  

Bus from Černý Most (metro B) to Benátky nad Jizerou (25 min / 31 km / 38 Kč) 

Small and pleasant town, strangely litteraly meaning “Venice on Jizera“… Nice castle on the hill that at one time belonged to the Emperor Rudolf II, and hosted the famous astronomer Tycho Brahe, and much later the musician Bedřich Smetana. I do recommend the toy museum - maybe more a private collection than a museum though - but with some great pieces – children (and grown up) will love it! For the food, we went to a pleasant restaurant (downer part though, you need to walk 10 min. pass the castle walls opposite from the city gate, and walk down the park), but our first attempt there the waiting time was 2 hours! Hopefully beacause this is a popular place for a Sunday lunch… Finally, I’d recommend the nice cukrárna on the square (upper town) for a typical Czech desert. My advice: take some cash with you since there is no ATM in the upper part of the town…

The list will continue to expand as we try new locations, or receive new tips!

Read also:

• Let’s go outside (Prague) #1 
• Let’s go outside (Prague) #3