The sign at the garden gate reads: "These Plants Can Kill."

The Guardian of Tallinn.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

An abstract monument to a symphonic composer.

An alien church provides much needed silence in the midst of a Finland shopping center.

A subterranean house of worship carved right out of the bedrock.

France's most famous cemetery, with some of its most curious tombs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A sweet symbol marks the place where torturous executions were once carried out.

The most loyal of little dogs, or a Victorian era publicity stunt?

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

Protecting the dead from opportunistic body snatchers.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

A six-ton wedding present for the King of the Scots.

The final resting place of soldiers' loyal canine companions.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Montreal's colorful subway station shows its support of the local LGBT+ community.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

One of seven Jewish catacombs in Rome and one of only two open to the public.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.