At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

Epicurean and holy traditions converge in what may be the oldest restaurant in Europe.

A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

Inside this building is another country within Rome, a sovereign entity without a physical territory.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Cat art as far as the eye can see.

Be on the lookout for the symbolic insect all over the city.

A giant wooden soda bottle pays homage to a distinctly British drink on the very spot where it was invented.

Have a seat with the father of modern computing at this Manchester monument.

Its collection includes a broad array of social, geographic, graphic design, and political history.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Model Trains and Much More in Hamburg.

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.