This abandoned office building is a lasting example of Soviet-era architecture.

Historic slum of Tartu.

The widest natural waterfall in Estonia is a sight to see in all seasons.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

This free museum is building a collection of books that are banned, censored or burnt around the world.

One of the oldest lighthouses in the world has been in continuous use since it was first built in 1531.

Only a fragment of this 15th-century Dance of Death survives today.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

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.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A subterranean shelter remains intact under a busy Paris railway station.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.