Now nearly abandoned, Kaskaskia was once the capital of Illinois and one of the most important towns on the upper Mississippi.

Even with its slightly risible name this colossal cross is still able to inspire awe.

This odd stone memorial remembers a loyal dog who offended the rail barons with his speed and saved his master with his pee.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

The famous Beatle secretly visited this Illinois town several times to visit his sister.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

This mysterious petroglyph evokes the ancient swastika symbol but was later vandalized with the more troublesome Nazi one.

The outcropping is graffitied with the name of the beloved musical Muppet television series.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

Home of the International Space Hall of Fame.

This is one really big nut.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

This fountain was designed to honor the man who helped bring water to Barcelona.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

On the wall of this medieval square, a symbol of the Spanish Inquisition.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

This colorful statue welcomes visitors to a Barcelona park.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.