In the town of Bomarzo in central Italy you will find Monster's Grove, a vast sculpture garden created in 1552 by Pier Orisini to be a unique & astonishing place. The scupltures are quite large, and some are carved directly into the bedrock; as the name might indicate, the subjects are mainly mythical creatures. For centuries, the stone was uncared for, and nature began to reclaim the art, until the 1970s when efforts began to preserve the pieces, and today it is a major tourist attraction, though still privately owned nearly five centuries in.
Walk the Great Wall of China, or rather, take a virtual stroll through the use of a QTVR-esque java applet along a good stretch of the Wall that seems to be in pretty fair shape. For the vast majority of us that will never get there in person, this is an interesting close up.