This former sugarcane transport tunnel is now a portal to a lovely beach.

Years of neglect and nature took a toll on this 19th-century lighthouse.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

The world's brightest bioluminescent bay.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.