This shallow cave got its name from copious amount of human bones found inside.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Easily overlooked in favor of the wineries that dot the region, this blast from the past is equally worth the visit.

This vacant station is a relic of harvest processing techniques of the mid-20th century.

An enormous roadside pan tells the story of a battle for pie glory.

Former self-sufficient mental institution now a planned community.

A lonely stone-sided terminal stands next to a grass airstrip on Michigan's Leelanau Peninsula.

The artwork honors those who are dedicated to preserving the beautiful Michigan peninsula.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

The structure has welcomed visitors to this scenic harbor city on Lake Michigan for many decades.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

The southernmost outpost of the Russian Empire in colonial America.

This whimsical seashell-shaped place of worship was designed to blend into its surroundings.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

The final resting place of soldiers' loyal canine companions.

Possibly the world's smallest museum is home to one exhibit that sheds light on the capital city's dark criminal history.

Thailand's distressed elephants find peace at this Chiang Mai sanctuary.

Buddha shrines hide within dark tunnels at this unique forest temple.

Why walk on this historical site when you can zoom down instead?

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.