The city's most famous sight occupies a 10-acre block surrounded by 15ft-high walls. LDS docents give free, 30-minute tours continually, leaving from the visitor centers at the two entrances on South and North Temple Sts. Sisters, brothers and elders are stationed every 20ft or so to answer questions. (Don't worry, no one is going to try to convert you – unless you express interest.) In addition to the noteworthy sights, there are administrative buildings and two theater venues.