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

A beautiful 62-acre Catholic shrine and botanical garden.

Elevated freight railway turned wildly successful urban park.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Breathtaking and huge 430 year old maps of Italy.

Two stone columns flank the grand Venice square, but there were supposed to be three.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

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

Go inside to really appreciate this 500-year-old technological masterpiece.

Five candy-colored villages on the Italian Riviera.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

2300-year-old Roman road connecting the empire.

The middle finger of modernity.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

Europe's largest prehistoric mound – burial site of a legendary king?

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

This Scottish burial tomb once held hundreds of ancient eagle bones.

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

Stonehenge has nothing on Castlerigg’s views.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.