The document discusses the UK Legislation website, which provides access to UK legislation from 1267 to present. It integrated two existing sites containing as-enacted and revised legislation. The goals were to make the site usable, open, and RESTful. An information architecture was developed based on the FRBR model. Expert participation helps address data quality and new requirements. Lessons learned include the importance of user focus, agility through native XML and RDF, and addressing performance and proprietary software pitfalls. The site demonstrates how complex documents can be enriched on the web through a layered architecture and use of web standards.