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

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

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

One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

This Hindu temple is an architectural marvel designed and built according to ancient Indian principles.

The artwork commemorates the many ways 20th-century people perished while on the clock.

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

Smallest house in Toronto sits on a lot meant to be just wide enough for cars to drive through.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

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

Mausoleum and Holy Seat of Antiochus I of Commagene.

A charming beach town in Turkey captures all the colors of the rainbow.

A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

The longest and widest floating bridge in the world.

The world's largest frame offers spectacular views of the city's past and present.

This enormous censer uses a pulley system installed over 400 years ago.

The highest tides in the world come in and out here twice a day, allowing you to essentially walk along the ocean floor.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

A Canadian port town is oddly home to two of the largest tree burls in the world.

A memorial to a giant seabird that was hunted to extinction.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

The oldest still-inhabited hill fort in India looks like a magnificent golden sandcastle.

A sharp sculpture made of thousands of pieces of jagged glass.