Train tunnel running underneath Quebec City.

A historic Montreal market that was the city's agricultural hub for over century.

The skyline of Montreal includes the silhouette of an unexpected fruit-shaped Canadian staple.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

This conservatory allows a little bit of the tropics to thrive in the middle of a major Canadian city.

This chilly Canadian hotel has a four-month lifespan due to the unusual material it's made of.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

The ruins of New Zealand's largest classical-style church.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

The once and future home of New Zealand's famed Pink and White Terraces.

Deadly scalding and one of the largest hot springs in the world.

One of the world's steepest streets seems to have houses sliding down it.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

This sheep farm has been forever transformed since being built for “The Hobbit” film series.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

A bright little alley in La Boca is a part of tango history.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.