Cone-shaped Castle Geyser (pictured) is actually larger and older than its famous sister, though eruptions are less frequent.
Central Park is touted as New York City's 'green lung' for a reason – its beautiful 843 acres are hard to match.
Glacier National Park in Montana often ranks in the top 10 most visited US national parks, but North Cascades, about 500 miles away in Washington state.
There are few places on Earth quite like the Las Vegas strip, with its all-you-can-eat buffets, bustling casinos, and glitzy hotels.
Arizona's Grand Canyon draws millions each year: in fact, its visitor numbers are usually second only to those of the Great Smoky Mountains.
Chicago's Vertical Gallery (pictured) is quirkier than its straight-laced sister, showcasing new and established talent in street art, prints, and illustrations.
Disney California Adventure Park is one of the top attractions in the state, but those after a smaller scale adventure might set their sights on Knott's Berry Farm.
Northwest of the Yosemite monolith, in Wyoming, you'll find Devils Tower (pictured), a national monument that matches the well-loved Half Dome's height.