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

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

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

Sip cherry liqueur at a bar dating back to 1840.

A bizarre representation of our ever forward moving society.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A hidden stream deep in the mountains creates one of the largest tufa waterfalls in Serbia.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

The largest brick bridge in the world.

Unusual building appears to be haphazardly built from randomly piled bricks.

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

A lively circle of dancers in the Georgian capital commemorates an ancient rite of spring.

With over 10,000 lights, this engineering marvel lights up the city after dark.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

The charmingly disheveled clock tower of Tbilisi's puppet theater.

One of the largest refracting telescopes in the world, and the first built specifically for studying astrophysics.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

The home of president Truman during the Potsdam Conference, and the place from which the atomic bomb strike on Japan was triggered.

A local train station entrance hall doubles as a sanctuary for barn swallows.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

This 135-year-old weather station studied the effects of the climate on human health.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

A beautiful 19th-century mansion slowly crumbled and became a 'ghost house' after World War II.