The castle in Krumlov was built sometime in the early 1200's, it's earliest documented mention in 1253. The surrounding homes were built soon after. Both the castle and town have echos of their original architecture, along with manifestations of later periods where one person or another remodeled to suit their taste. Throughout the town you can see Renaissance sgraffito and frescos, ornate Baroque and Rococo decorations, and some classical additions. After WWII the Czech Republic was under communist rule for almost four decades and that is one of the main factors that lead to the preservation of Cesky Krumlov. In 1992 the city was designated as a UNESCO World Heritage Site and in 2008 it won the European Union Prize for Cultural Heritage.
So far Cesky Krumlov has been our absolute favorite destination. It's the perfect mixture of touristy attractions and local parlours. By day you can bump elbows with bus loads of daytrippers exploring the 13th century castle, hike in the surrounding mountains, or take them by horseback if that suits you. By night the town is returned to the locals and you can wander the cobblestone streets and alleys and maybe happen on a gypsy bar with live music or disappear into a cozy Bohemian tea room.