A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

Known as "Toronto's Flatiron."

This half-ton piece of the Alps sits at the base of the CN Tower.

One of the largest underground systems runs under Canada's largest urban center.

The oldest landmark of Toronto is a testament to shifting sands.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

This whimsical fountain pays tribute to Toronto's four-legged friends.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

This futuristic German television spire is actually the world's largest digital clock.

Twisted buildings adorn the banks of the Rhine river.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Massive galleon from a box-office bomb docked in Genoa.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

The oldest operating pharmacy in the world features 800-year-old recipes.

Featuring the last fully walkable parapet walkway in Europe.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

This medieval castle was home to a known tyrant and features several hidden passages.

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

This unusually shaped fortress houses a blend of centuries-old frescoes and modern art.