BarSALonA - Barcelona -
http://ourworld.compuserve.com/homepages/barsalona_xavi/
City of Amsterdam Home Page -
http://www.amsterdam.nl/
Club NYC -
http://www.clubnyc.com/
Expo Universal 98 - Lisboa -
http://www.expo98.pt/pt/
Gui@ Rio -
http://www.uol.com.br/odia/guiario/
MetroBeat - Nova York -
http://metrobeat.com/nyc/index.html
Pariscope - Paris -
http://www.pariscope.fr
Roma 2000 -
http://www.Roma2000.it/
San Francisco Underground Travel -
http://www.sftravel.com/
TimeOut - Information -
http://www.timeout.co.uk:81/TO/International/Information/walks.html
Useful Guide to Madrid -
http://malika.iem.csic.es/~grant/madi.html