Hidden beneath the streets of London is a secret subway that only carried mail.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

An effigy of Vancouver's Gastown neighorhood's namesake.

A massive Montreal stadium that has seen nothing but trouble since its inception.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

The city of Halifax still bears the scars of the largest explosion prior to the atomic bomb.

This whimsical fountain pays tribute to Toronto's four-legged friends.

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.

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

A historic Montreal market that was the city's agricultural hub for over century.

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

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

Soaring over the Niagara Whirlpool since 1916.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

The largest fountain in Bratislava.

A cableway for car transport.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

This colorful but controversial ceiling has been likened to a 21st-century Sistine Chapel.

Unconventional site where the tracks of Zurich tramcars intersect.

This statue of a Hindu cosmic dancer at CERN is a metaphor for modern physics.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.

See the rare bloom of the "Queen of the Night" cactus at one of the world's largest succulent collections.