When the tide is high, you can see the Atlantic pushing up through a deep, jagged hole in the rock.

For fans of the stained glass art of Irish illustrator Harry Clarke, this church is the place to be.

An oddly conical beacon perched atop beautiful Irish cliffs.

One of the oldest lighthouses in the world, this structure was built more than 800 years ago.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

After 400 years of being closed to the public, this monastery's underground tunnels and secret garden are now a museum.

This church is named for one of the most dramatic tales in the early Christian church.

At an estimated 3,800 years old, this olive tree is one of the oldest on earth.

The second-highest train station in Europe.

This medieval footbridge in the Swiss Alps is known to attract cliff-jumping daredevils.

This work of engineering is imbued with elegance and ingeniousness.

This lavish 20th-century casino adorns labels for San Pellegrino water.

The walls of this tiny Italian church are entirely covered with frescoes.

Hundreds of plague victims were buried beneath this small, rural church.

Jesus turns into vines inside this chapel.

Distressing images of the Last Judgement adorn the walls of this medieval sanctuary.

This church, better known for its weeping portrait of the Virgin Mary, also houses the world's oldest existing piece of taxidermy.

The highest waterfall in Italy is only "turned on" five times a year.

A place to appreciate the sweat and ingenuity it used to take to make a pot.

A massive horizontal lever press comprising parts from the 17th century.

Exchange a book at the entrance of this medieval Lovere alley.

An annual goat race takes place within the walls of this medieval castle.