An enigmatic concrete structure in a lakeside Toronto park raises more questions than answers.

The giant birds honor two native North American species.

This giant, unfinished suburban cathedral was meant to be the Canadian seat of the Slovak Greek Catholic Church

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

This remote mountain shrine is one of the most sacred Zoroastrian temples remaining in the world.

Ancient structures used to make and preserve ice in the deserts of Persia.

A historic trade hub teeming with gorgeous architecture, colorful goods, and vibrant designs.

In this tiny Iranian town playing on the roof isn't just encouraged, it's the only place to go.

This vast, water-filled underground labyrinth can only be toured by boat.

Hydraulic systems in an ancient underground Iranian city.

This steamship has been beautifully rusting off the coast of an Iranian island since the 1960s.

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 1,500-year-old, 3-story subterranean city where ancient Persians took refuge in times of war.

A 20-foot statue reminds viewers of an extinct species.

This giant roadside fruit is home to an array of apple-based treats.

Two Chinese dragons guard the caves of this medieval temple in Iran.

Salt cured mummies continue to turn up in this Iranian mine.

Long before air conditioning, Persian architects found an ingenious way to cool off.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

The palace of the King of Kings, burned by Alexander the Great.

A dreamy mausoleum honors Persia's most famous poet.