These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world’s largest coastal brick fortresses.

Uninhabited islet in the Caribbean is the sanctuary of giant lizards.

The most loyal of little dogs, or a Victorian era publicity stunt?

The ruins of a medieval monastery named after a type of tree.

This single room has survived the centuries with almost no deterioration.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

One of Ireland's most infamous prisons for rebels including men, women and children.

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

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

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

This Stone Age solar temple aligns with the sun on each equinox and solstice.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Iceland's tribute to its thankless civil servants.

This stunning concert hall has become a symbol of Iceland's national recovery.

Three columns of volcanic rock shoot out of the ocean.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

The poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.

The Wright Tavern is possibly the most important building in Concord Massachusetts to the American Revolution.