chapter 1 Requirements and Challenges for Building a European Spatial Information Infrastructure: INSPIRE -- chapter 2 Geometry Semantics in Spatial Information / chapter 3 Semantic Web Technologies as the Foundation for the Information Infrastructure / chapter 4 Standardization and Modeling of Transportation Infrastructure Semantics: Experience from GDF, TransXML, OPAL, and Framework -- chapter 5 How Earth Science Can Contribute to and Benefi t from the Spatial Information Infrastructure / chapter 6 Opportunities and Challenges in Exploiting Semantics as an Aid to Information Integration: A National Mapping Agency Perspective* / chapter 7 Using Formal Semantics for Services within the Spatial Information Infrastructure / chapter 8 Geosemantic Web Standards for the Spatial Information Infrastructure: Nice to Have or Hopeless WIthout? / chapter 9 A Standardized Land Administration Domain Model as Part of the (Spatial) Information Infrastructure / chapter 10 Metadata and Spatial Searching as Key Spatial Information Infrastructure Component: Future Standardization Developments / chapter 11 The Spatial Information Infrastructure as Part of the Information Infrastructure