New England in autumn is nature’s spectator sport, and a special place to view its riotous colors is the Nashua River Rail Trail, spanning just over 12 miles in Massachusetts and spilling into New Hampshire.

The Grand Canyon Greenway Trail totals 13 miles of paved pathway for biking and walking, providing access to numerous scenic viewpoints and attractions in the park.

Thousands more miles of rail-trails are available all across the globe. For World Tourism Day, we thought we’d take a look a few bucket list international rail-trail destinations.

Here are four sections of the Great American that span 100 miles or more with minimal on-street connections—perfect for multiday adventuring.

All 43.6 miles of the Tanglefoot Trail opened at once, becoming the longest rail-trail in the state, and connecting these communities.

The Palatka-to-Lake Butler State Trail offers a slice of quiet paradise, journeying more than 25 miles to Keystone Heights through well-canopied forests, pine flatwoods, picturesque countryside and stands of showy wild azalea (which the locals call “pinksters”).

A momentary pause on the Platte River Trail might yield a glimpse of a pronghorn antelope or mule deer darting through the underbrush, or an eagle or osprey searching for a meal in the river.

The Great Redwood Trail is a 300-mile proposed trail from the shores of San Francisco Bay to the redwoods of Eureka on Humboldt Bay.

This is what Illinois’ Route 66 Trail is working to achieve: a long-distance trail from Chicago to St. Louis; an opportunity to revitalize communities and experience Route 66 as never before.