Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

A Nesting Doll of Churches.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Architectureal fantasy quarter of Rome.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

An outstanding and haunting glimpse of the horrors of the Great Famine of Ireland.

Achill's most recently abandoned village dates back to to the Age of Enlightenment.

A stunning Victorian abbey and walled garden on a lakefront.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

These moss-covered medieval ruins tower atop the smallest of Ireland's Aran Islands.

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

An important landmark in the history of algebraic logic.

This scenic Icelandic lava flow is named for a pair of Berserkers who were murdered, according to a famous Saga.

A Wes Anderson-esque lighthouse that boasts magnificent coastal views.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

This black church sits alone among a field of lava rock.

This tiny museum's sizable collection is jammed into a former underground public toilet.

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

This memorial to a murdered empress took 20 years to design, then spent 30 years hidden away in storage.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.