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

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

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

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Only six people can sit inside this delightfully quaint sanctuary.

This historic fort spans more the 300 years.

A unique subway station where pillars evoke ancient civilizations.

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

This half-ton piece of the Alps sits at the base of the CN Tower.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

This memorial complex contains several mass graves for victims of the Siege of Leningrad.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

This almost-forgotten underground dungeon housed several convicts over the years, including Caravaggio.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."