These two 15th-century metal rods allowed people to check if they were swindled or not.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.

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

This riverside restaurant has been serving customers since 1146.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

A silly medieval mural preserved on the side of a Viennese house.

The beautiful baroque library of the Hapsburg empire.

The final resting place for the remains of 143 Habsburg royalty.

Baroque celebration of the end of the Great Plague of Vienna.

An abandoned cable car station located on the Danube stands like a haunted house above the river.

This memorial to a murdered empress took 20 years to design, then spent 30 years hidden away in storage.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

This tomb of a Sufi mystic is a remnant of Ottoman rule in Hungary.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Several bricks indicate the various flood levels this crossing has survived over the centuries.

This small museum in a 17th-century building honors three iconic Scottish writers.