From Český Brod to Kostelec n. Č. l. + brewery

Pleasant spring hike close to Prague. We did 21 km total but that was only because we did a lot of detours. Map: http://mapy.cz/s/6Phd

Trains to Český Brod leave very often (app. every half an hour) from Prague Masarykovo nádraží. If you have Opencard (public transport pass), buy a ticket from the last station in Prague. They are now renovating surroundings of Č. B. station so go to the centre until you reach the red mark. You can stop for some sightseeing (Wikipedia: St. Gothard's Church (baroque church), Gothic bell tower, middle age town wall, neorenaissance town hall, Prokop Veliký monument, renaissance Trinity Church) and also for sweet breakfast (I didn't try personally but it's supposed to be very good - Cukrárna M+Z Kašovi,
nám. Arnošta z Pardubic 39, Mon 10-17, Tue-Fri 8-12.15+13-17, Sat 8-11.30, Sun 11-16). Also there is an outdoor fitness in local parc to burn the calories after and warm up muscles!

(Extra - I also didn't try - but there are some historical underground cellars in "Městské kulturní a informační centrum" (cultural and info centre, + library) at the main square no. 1).

Follow red trail till Tuchoraz with medieval fortress. Unfortunately it is closed for public so you can only see photos to find out how it looks inside: http://hrady.rajce.idnes.cz/Tuchoraz

Now you can change to blue trail (later also to yellow) but we stayed on red until we reached the crossroads and changed to yellow to see the castle Šember ruins - there are none. But it's a nice place:) We went a bit back down the hill and changed to green, heading directly to Sv. Martin church. It is more beautiful though to just stay on red and walk through the river Šembera valley, you reach the church anyway. It is an interesting one to see, built in the end of 12th century. Unfortunately opened only every 4th Sunday in month (11.30) for mass. 

We continued to Kozojedy wanting to take a shortcut to Kostelec but that was really busy road  so I really don't recommend that - instead take the smaller road to the north (http://mapy.cz/s/6Phw) and then red trail again.

In Kostelec nad Černými lesy, you can just take bus to Prague (quite often from the main squary, going to Háje metro). Or go to the brewery pub - although they don't brew (yet) they offer very good special beers, very nice room with collection of first republic beer boards and pretty good food. The service was worse but that is I'm afraid standard in this country:( There is a beer museum, too, now open every Sat. from 3 pm or you can arrange special tour. Website mostly in Czech... http://www.pivovarkostelec.cz/en

There is a beautiful rennaisance chateau, closed to public, but sometimes you can go to courtyard at least.

There is a museum of pottery (I didn't visit) - open Thu-Sat 10-12 + 13-17

Or, take a walk in beautiful vast forest parc which was used by Soviet Red Army as sanatorium (place for healing lung diseases; there are some abandoned buildings too - unaccessible). You can find the entrance on right side of Kutnohorská road at N 49° 59.390 E 014° 51.858.

For geocachers, there is a 100 caches serie "TFTC" with some quite challenging ones - check the favorite points to select the better caches.