A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

A man has revenged his true love's betrayal through tears and stone genitalia.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

Sweden's "good old days" painstakingly re-created in a model village.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

This Stockholm light tower can be controlled by anyone with a smartphone.

A nightly tradition fills the streets of Flogsta with a collective scream.

Frequent fliers welcome in this airplane hotel.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

The world's largest model of our planetary system.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.

A modern sliver of architecture in Roma.

An enigmatic modern marker left next to a historic Roman site.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

A hospital where antique dolls are given new life.

A Nesting Doll of Churches.

A fairy tale castle in modern Rome.

The final resting place of the poets Shelley and Keats.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

2300-year-old Roman road connecting the empire.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.