This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

Flames have been burning within this mountain for more than 2,500 years.

Roman ruins, natural methane fires and a lovely beach.

Built by the patriotic residents of Boonsboro in a single day.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

A sprawling bloom-filled refuge with walking paths, benches, and a fountain at its center

The birthplace of the beloved colorful crayons right in downtown Easton

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

The Ryerss mansion in Burholme Park now houses a community library and a museum filled with a trove of oddities from around the world.

A tragic mystery left this boy nameless for 65 years.

The corporeal remains of Napoleon III's dentist rest under this 15-story obelisk.

America’s smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

A curious building honoring past and current members of a historic musical comedy troupe.

The Fabric Workshop and Museum showcases fabric and mixed media work by artists of great international renown as well as local and outsider artists.

Dr Barnes' $25 billion private collection of art and arboretum.

Descend into the world’s longest-running deep anthracite coal mine.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

An abandoned railroad tunnel transformed into a creepy path for hikers and cyclists.

This freshwater spring fills with 10,000 gallons of water per minute.

This 19th-century ghost town offers a stunning view of Lake Michigan and a journey through the region's industrial past.

Rusting hulk stands in testament to the Keweenaw Peninsula’s rich history of copper mining.

Large one-man sculpture park in Michigan.

This was the first ever National Lakeshore, established in 1966.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.