A variety of walking tours are offered by Guide Siena (tel: (0577) 43273; website: www.guidesiena.it). Tours do not take place at set times and those interested should check with the company first. Tours can be pre-booked and specially arranged. Themes covered include a general introduction to the city sights, religious architecture, pilgrimage routes in Siena and exploration of the city walls. Guide Siena also offers tours to attractions outside the city, such as San Gimignano. Walking and cycling day trips into the surrounding countryside are run by Walking and Cycling Agency (tel: (338) 895 0100; website: www.trovatoservices.com).