A hidden three-foot-wide house separates these two regal churches.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Ancient catacombs form the foundation for this Rococo orgy of a church.

Elaborate tile work in this railway station tells the story of Portugal.

The world's oldest bookshop still in operation.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The scorched Lisbon church that survived two earthquakes and a massive fire.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Dedicated to the untimely death of American balloonist and parachutist.

Historic slum of Tartu.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

Spend your honeymoon where the Devil had his wedding.

Relics from an era long gone, sit idle outside this Estonian museum.

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

"There's nothing there," and other lies the KGB told us.

An extensive collection of some of the oldest grave markers in Lithuania.

This magnificent Art Deco church is a reflection of Lithuania’s turbulent history.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.