An unusual round church in London with a Templar past.

A cluttered and astounding collection of antiquities and curiosities.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

Modern art meets modern convenience in possibly the world's most architecturally important public bathroom.

The explorer Captain Cook may have named it White Island, but the Maori call it Te Puia o Whakaari – The Dramatic Volcano.

A Maori village obliterated by an 1886 volcanic eruption.

The once and future home of New Zealand's famed Pink and White Terraces.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

Tubing through a cave lit with glowworms is a magical underground experience.

Venice's island of the dead.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

A modest museum in the final home of Italian poet and father of modern Italian, Francesco Petrarca.

Five candy-colored villages on the Italian Riviera.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

Anatomical cabinet holds unexpected treasures.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

The forbidden island of the Tuscan Archipelago may still contain buried treasure.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.