This stone harbor was key to Carnlough's limestone industry.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

The pyramid and dome deep inside the Dzūkija forest are believed to channel divine energy.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

This 13th century Gothic brick castle is the largest in the world by surface area.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The world's first combination ski slope and power plant.

The reconstruction of this prominent building fulfilled a long-written command.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

The oldest continuously operating pharmacy in Europe.

What may be Boston's finest Art Deco building, located in the city's Financial District.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

This historic street in Quito is known for its seven stone crosses—and one presidential assassination.

A short volcanic hill in Quito doubles as a stellar observation point of an iconic statue.

The world's tallest aluminum statue is also the world's tallest image of a winged Virgin Mary.

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

Quito's historic, main square dates back to the 16th century.

It took 160 years to complete the most ornate church in Ecuador.

The gondolas let you glimpse a bird's-eye view of one of the world's highest capital cities.

A turquoise lake within a volcanic crater.

A swing to dangle you off the very edge.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

This one-time health resort was used by aristocrats around the world.