The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Once a meeting point for great thinkers, and the midpoint of the country.

The world's first combination ski slope and power plant.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Hans Christian Andersen for the postmodern world.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

Visit a sweet shop selling one of the first candies ever made and sold in America.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

This statue intended for children to enjoy became a minor political spat.

This hotel was the site of major events in sports and radio history. It was also used as a detention center during World War II.

A centuries-old church stands as a testament to Boston's "father of architecture."

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Historic Hull Street was actually the first street with a proper name in the Boston area.