Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

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

This landmark cemetery in Boston was created more than 300 years ago.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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

A technicolor place of worship for Elevationists.

Go inside the house that inspired L. M. Montgomery to create one of literature's most beloved heroines.

This man-made mound monument was built out of soil from all across the Polish empire.

A massive Montreal stadium that has seen nothing but trouble since its inception.

Canada's largest graveyard boasts a lot of noteworthy artifacts as well as its own computerized mapping service.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

A fountain standing as a testament to a doomed alliance.

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

A marvel of Byzantine engineering under the streets of Istanbul.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

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

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

One of the most controversial statues in Romania is an emperor with no clothes.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

Romania's triumphal arch looks out over Bucharest.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.