The paper presents the results of the development of a corpus for Russian with the syntactic markup. Having discussed the main advantages of the constituent grammar approach to the syntax, we present examples of resources, that are currently available on the internet, and highlight basic expectations for a constituency treebank. Then the paper describes the process of developing the treebank, which includes working out the design of data representation, creation of an ensemble of morphosyntactic markup tools, filtering erroneous parses and matching examples, etc. The paper finishes outlining the basic principles of search in the treebank, describing its main characteristics and giving some examples of use.