Two standing giants remain as a tribute to Luxembourg's metallurgical past.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This lurid German fountain plots the sad course of marriage from dating to death.

An ornate sculpture of an ox in repose marks the former entrance to Nuremberg's medieval meat market, which was destroyed during World War II.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

The last bastion of Roman presence north of the Alps looms over a German town.

It's good luck to be mocked by this monkey.

In this German city center, the streets have no names.

A historic casino where Dostoyevsky is said to have lost it all on a single spin of the roulette wheel.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

Crop circles inspired this whimsical garden in Germany.

Ancient serpentine sacrifice holder that has stood the test of time.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

A fountain standing as a testament to a doomed alliance.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

This natural "sea of stones" was once used by the Romans as a quarry.

This baroque palace displays an impressive collection of taxidermy, art, and rare objects from the days of courtly hunting.

The last Tsar of Russia constructed this private church just so he could attend services when visiting his wife's hometown.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A popular European tradition makes its way to the states on one of America's most famous bridges.