Prayers and messages of hope decorate the ceramic tiles of this pavilion.

This cave holds a surprisingly colorful variety of geological oddities.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

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.

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

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

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Macabre astrological automaton clock dating to the late 1400s.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

An art deco ice cream shop covered in vintage train station tiles.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

This magnificent Cincinnati graveyard is also a popular public park.

What is it about mushrooms that makes people wish they lived inside of them?

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

The world's longest known cave system.

This quirky roadside attraction provides insight into Minnesota's logging history.

The watery grave of an impractical idea.

A spooky defunct railroad tunnel now part of a sprawling trail.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.