A celebrity from the late Cretaceous period.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Look closely and you’ll notice that the color changes a third of the way up the tower.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

A tree that defies gravity grows in an ancient ruin.

Virgil's many-mouthed gateway to the underworld.

Italy's "New Mountain" rose from the ground in a volcanic eruption in 1538.

This medieval city gate is now a blend of the past and the modern world.

The Emperor Tiberius' palace of debauchery.

The largest fountain in Bratislava.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

A bizarre house filled with an astounding array of collections.

This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

This cave holds a surprisingly colorful variety of geological oddities.

A bypass decorated with large wooden troll carvings.

More than 5,000 contemporary and "historic" mustards from around the world.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

In the mid-19th century, an eight-sided house was the latest fad.

Curtiss is a forgotten figure in the early history of flight.

The library of every book lover's dreams.