It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

This splendid tomb may look fantastic, but there's nothing in it...

Amsterdam's Red Light District leaves little to the imagination.

Where royalty waits in the height of luxury.

Amsterdam's former hotspot for public executions and dissections.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

A six-ton wedding present for the King of the Scots.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

The Adriatic's most famous wind can be reliably experienced in the city's Marina.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Take a leisurely ride on a 1906 cable car or a 1907 steam locomotive.

This little medieval church hidden in the center of Yerevan was lost and rediscovered—twice.

Destruction from Armenia's 1988 earthquake inspired an artist's sculptures of scrap metal.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

Half of the Pulitzer Prize-winning author's ashes were buried in Armenia.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

A geological oddity topped with a 2,000-year-old pagan temple.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.