A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

This freshwater spring fills with 10,000 gallons of water per minute.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

The world champion cow is buried within a historic old asylum.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

A 12-foot sculpture serves as a constant reminder of the importance of protecting and restoring the Boardman River.   

Former self-sufficient mental institution now a planned community.

Though its branches are painted bright colors by generations of locals, the tree is said to be a haunted portal to hell.

Talula the swan has been welcoming visitors to Elk Rapids, Michigan, for more than four decades.