In 1909, the steepest and most difficult piece of track on the Canadian Pacific Railway was replaced with a series of spiralling tunnels cut into the mountains.

A historic ghost town still worth a visit.

A colorful collection of scavenged glass bells decorates this Canadian ranch.

A winding staircase that appears to lead to nowhere is actually a diving platform into the Wellington Harbour.

Quotes and poems etched on stone plaques are hidden along this waterfront walkway.

These neon green and blue lakes are in the shadow of two huge volcanoes.

Modern commuters still pass through this 2,000-year-old Roman archway.

Cascading outward, this waterfall creates the appearance of a flowing veil.

Tubing through a cave lit with glowworms is a magical underground experience.

What began as a makeshift lost and found, now exists as a unique art installation.

This communist country can still appreciate its fragrant past.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

Aruba’s first chapel.

An eerie natural formation that looks right back at you.

Walk through abandoned anti-Russian military tunnels on this volcano at the head of Auckland Harbor.

A Maori village obliterated by an 1886 volcanic eruption.

Come for the bait, stay for the brioche.

New Zealand's oldest prison holds a dark history and the scars of a deadly earthquake.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

This 46-foot-tall carving of a legendary Māori navigator can only be visited by boat.

Picturesque basketball courts sheltered by historical defensive walls and with an enviable sea view.

The largest underground pedestrian tunnel system in the U.S. mostly caters to the people working in the offices above, but provides a great, air-conditioned way to traverse the city.