Giant topiary dog once played a role in a terrorist bomb plot.

One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

The giant birds honor two native North American species.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

The remains of a once-famous hotel that also acted as an artist colony.

Known as "Toronto's Flatiron."

This historic library honors the legacy of the British Empire's first children's librarian.

This Ottoman-era Greek Orthodox Church was built to honor Agia Pareskevi, a Christian saint.

This Byzantine Church was moved from Paris to Athens block by block.

According to legend, this ancient column contains healing properties.

A tiny Greek Orthodox church from the Ottoman era hides on a busy city street.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

A Byzantine church containing the holy remnants of three saints sits atop the site of an ancient temple.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

A Byzantine-era church hidden in a wooded area below the Acropolis.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

Once the central jail for Los Angeles, this building housed inmates like Al Capone, those arrested from the Zoot Suit and Watts Riots, and individuals imprisoned for their sexuality.

The decor of this Hollywood movie palace just barely predated the opening of King Tut's tomb.

This peaceful garden is hidden on the grounds of a spiritual organization founded by a pioneer yogi.

An iconic location along the Los Angeles River where countless movie scenes are filmed.

The neighborhood of Eagle Rock is named after a gigantic boulder with a shadowy surprise.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

A giant scrawl on the skyline of south London.