Numbeo is the world’s largest database of user contributed data about cities and countries worldwide. Numbeo provides current and timely information on world living conditions including cost of living, housing indicators, health care, traffic, crime and pollution. Numbeo is a collection of Web pages containing numerical and other itemizable data about cities and countries, designed to enable anyone to contribute or modify content. Numbeo uses wisdom of the crowd to get as reliable data as possible. Numbeo provides statistical analysis of collected data. It also provides a system for various systematic research on huge dataset with worldwide data.