An ancient Roman temple first dedicated to an emperor's wife is now a church.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.

The legendary building that needed ghostly approval before being built.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

A wall of chewing gum moonlights as collective art.

Babe Ruth and others planted saplings for a 1930s tourism campaign. The saplings grew as the area faded.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This legendary urban waterfall creates a dazzling display of rainbows.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This little Vancouver shack is a temple to all things Hendrix.

A popular photo spot showcasing the remains of a historic building.

A colossal gold-dredging machine from the Klondike mining boom, now open to tours.

A standalone wonder amid the prairie badlands of southeastern Alberta.

One of Canada's oldest collections of stone fur trading buildings.

This buzzy, award-winning building hovers 85 feet above the ground on a dozen colorful stilts.

Since its original beginnings as a weather observatory mountaintop, this facility played an instrumental role in gathering atmospheric data for almost 100 years.

This bushy bug is one of the unsanctioned public sculptures that have survived in Regina.

The first post office in Toronto still operates today, complete with quill pens and ink for writing letters.

Canada's accused-traitor-turned-folk-hero is buried under a red stone in a ring of his own.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

This decommissioned DC-3 now forever points into the oncoming wind.