Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

The first declared National Monument in the United States.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This popular pitstop lives up to its name.

Mysterious installations bring levity and light to a sometimes stodgy city.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

The oldest military monument in the United States.

This statue honors the author's groundbreaking family story.

Just outside the Naval Academy, Hell Point is a historical marker that could easily be the point where failed students wait for the bus.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

The land is home to swimming ponies and a legendary 18th-century treasure.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

This beautiful, historic church looks like something out of a simpler past.

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

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

The only quarter of the Old City not dedicated to a major world religion.

A "miracle" that seems to produce more holy fistfights than holy revelations.

A very big rock just plopped down in the New England woods.

Rock face that shares a name with Mary Shelley's famous doctor.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.