Baptisms in troughs and post-sermon rodeos at the world's biggest cowboy church.

It specializes in outsider art and artifacts of secret societies.

Long tunnels run under the ancient chariot racing circuit to the tower.

Stunning Roman aqueduct used for 1900 years and still standing.

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Stairs often replace streets on the steep slopes of this old mining town.

At an isolated roadside rest area stands a monument marking where famous Western star Tom Mix died in 1940.

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

This New Orleans statue of a portly figure in a goofy hat pays homage to a classic of satirical literature.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

The second oldest continuously operating bar in Louisiana.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

The center of the only hemisphere that awards visitors with a commemorative coin.

Memorial to the 137 lives lost on a ship fire, the whole hulk of which washed up on the Asbury Park shore.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

The biggest solar telescope in the world helps reveal the secrets of our sun.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

This giant steer-skull edifice refuses to die.

A modernist landscape of water and sci-fi concrete.