One of the largest underground systems runs under Canada's largest urban center.

Montreal's colorful subway station shows its support of the local LGBT+ community.

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

Welded sphere dropped from space.

There is only one place in the world where the corners of four nations come together.

A hollowed-out baobab that became the horrific final resting place of leprosy sufferers, with gruesome evidence to prove it.

When humans abandoned this safari lodge, the lions took over.

Réunion Island's highest point is a two-million-year-old volcano and a paraglider's paradise.

An ancient temple to the Hindu god Shiva surrounded by jaw-dropping scenery.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

This beautiful, historic church looks like something out of a simpler past.

This stunning concert hall has become a symbol of Iceland's national recovery.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

This elegant arc of a waterfall marks a religious turning point.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

Sweden's "good old days" painstakingly re-created in a model village.

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

A snapshot of the city's fascinating voodoo culture.