The Neo4j database, although not requiring a schema, often adheres to one, making it difficult to create efficient queries without understanding the underlying structure. The built-in Neo4j Browser can display node labels, relationship types, and property keys but lacks visualization capabilities for non-trivial schemata. A Cypher query called `db.schema()` provides virtual entities that do not exist in the database, allowing users to explore the schema manually. However, this method has limitations and is not suitable for complex databases. The yFiles library can be used to build a custom schema viewer that automates the manual tasks involved in understanding the Neo4j graph database structure. A demo application was created using yFiles for HTML, which includes features such as filters, master detail views, dynamic layouts, and interactive node creation, making it easier to explore and understand complex Neo4j instances.