The eccentric and colorful pavilions of Tower Grove park are a beloved and overlooked symbol. 

Built for an exposition in 1915, these horticultural displays have stood the test of time.

A magnificent, reportedly haunted mansion built for a composer by Spiritualists.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

Lucha Libre (Mexican Wrestling) themed taco shop.

The Magical World of George Phar Legler.

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

Collection of vintage trailers double as hotel rooms.

A natural history wunderkammer in the middle of the desert.

This nine-story building can be played like an instrument.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

In a quiet north Chicago neighborhood rests a stunning relic of the golden age of earthenware design.

A vintage penny arcade hidden in the back of a fun fair-themed bar.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

Dr Barnes' $25 billion private collection of art and arboretum.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

The winter home of millions of migrating monarch butterflies.

Two waterfalls flow down the cliff faces decorated with rare natural basalt columns.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The ruins of an ancient city built by Mayan traders is centered around a temple of a sacred feathered serpent deity.