The town has over 100 listed buildings, mostly from the Georgian era. Main Street has been described as "one of the best examples of unspoilt Georgian architecture anywhere in the world." Many buildings are built out of local volcanic rock. St James' Church dates from 1772 and is the oldest Anglican church in the Southern Hemisphere. Another of the town's prominent features is Jacob's Ladder, a staircase of 699 steps, built in 1829 to connect Jamestown to the former fort on Ladder Hill. The ladder is very popular with tourists, is lit at night and a timed run takes place there every year, with people coming from all over the world to take part. The Museum of Saint Helena is situated in Jamestown, one of two museums on the island (the other being Longwood House).