Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

A tilted half-timbered house from 1672 is built into a salvaged segment of a medieval wall.

The stunning interior of this Gothic church is covered in ornate gold details.

This rusting remnant of the local herring industry is being given a second life.

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

One of downtown Berlin's last reminders of its Communist past.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This crumbling Portuguese ruin overlooks the populace it once ruled.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

The colorful, smiling concrete silos of Vancouver.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

These delicate sand pyramids look like naturally occurring gothic spires.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Once a black market electronics marketplace, now an otaku shopper's paradise.

This 700-year-old street food market features baby octopus and soy donuts.