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

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

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

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

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

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

Canada's subterranean Cold War museum has doubled as a movie set.

This memorial museum chronicles the apocalyptic destruction of the First World War.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

Museum in a swimming pool where the water still flows.

The place to be if you love vintage Swedish cars.

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

An open-air museum exhibiting a total of 52 century-old buildings, recreating Hokkaido’s “pioneer village.”

A preserved oak tree about 3,500 years old found in Riga, Latvia.

Every summer, the Mendenhall River greenbelt comes alive with an explosion of magenta flowers.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This igneous rock monolith towers above the surrounding landscape just outside the Nigerian capital.

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

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

Hiding in plane sight.

An ode to one of the first concerts broadcast via satellite.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.