A little church on a tiny island looks like something from a fairy tale.

This Russian religious complex is a Frankenstein's chapel that includes influence from almost all the major faiths.

Stunning examples of Russia's 18th-century wooden architecture.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

Troublesome students were detained in this tiny graffiti-covered university jail.

This little gem in the Gulf of Riga has a very rich heritage and distinct culture.

Historic slum of Tartu.

Two well-hidden huts let animal lovers spend the night among the bears, wolves, and other predators of the forest.

This abandoned fighter jet launch center is now a haunting street racing course.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.

This old Estonian mine has been kept like a sprawling time capsule of the local shale industry.

This 15th-century cave complex is one of the very few monasteries to stay open throughout World War II and the Soviet regime.

This peculiar border irregularity is the only way to legally enter Russia without a visa.

A former imperial sea-fortress and Soviet prison.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

Man-made mineral caves house massive bat colony.

The gutted remains of this Estonian mansion are a monument to a tragic love.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

This disappearing geyser has been attributed to witchcraft, but really it's all about rainfall.

Mysterious craters may have been home to an ancient cult.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

Architectureal fantasy quarter of Rome.

This centuries-old Italian chapel hangs midway down a sheer cliffside.