Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

This elaborate towering structure was once famed for its revolutionary height.

House a green chile pork Crunchwrap swaddled in hot, fresh tortillas.

Although it also features red, orange, and variegated cliffs of Navajo Sandstone, this state park is often overshadowed by its more famous neighbor.

Couple's personal collection of pinball machines turned public pinball museum.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

The eccentric mansion of one of the most popular horror authors of modern times.

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Three hundred years of preserved Spanish colonial history in San Antonio.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

This downtown Dallas art installation is always on the lookout.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

A unique set of caves that spits waves back out into the ocean.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

Golden Gate Park's historic collection of plants.

This 19th-century church is now a popular roller rink.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

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

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.