Although crime rates in Prague are comparatively low, this is a big city, and travellers should exercise the common precautions.
1) Pick-pocketing is really the worst danger. We recommend you keep valuables in a hotel safe. Do not take large amounts of cash with you as you can always use cash machines. Be careful in touristy areas, like Charles Bridge, Karlova St. on Old Town Square, on trams 22 and 23, on the metro during peak hours and in busy stores.
2) ‘Unsafe’ Locations – Wenceslas Square at night can be risky if you get close to prostitutes or even drug dealers who operate there. Some foreigners have been robbed of all their money. The final locations to avoid are Prague’s main train station at night and the nearby park.
Other concerns which might spoil your romantic feel of the city are stag parties comprised of rowdy beer-addled lads which can appear anywhere around the city centre, especially at night.
3) Taking a taxi is another problem. Always call a reputable company to avoid been overcharged.
Natural Hazards in the Czech Republic
The Czech Republic is in a zone where earthquakes are virtually unknown, and tornadoes are very rare. The only natural disaster which appears in the Czech Republic is local flooding. Concerning natural hazards, it is one of the very safe countries.