On Park Avenue, a stone viaduct supporting elevated train lines further disrupts the usual street pattern.
Over the last 20 years Metro-North, which operates the line, has made extensive repairs to the parts north and south of the stone viaduct.
Over this stretch, from 98th to 116th (but since reduced), the railroad built the massive stone viaduct, with 2,000 men at work, night and day, from 1872 to 1875.
But it is one of only three inscribed on Unesco's World Heritage List, featuring 84 tunnels as well as 383 spectacular bridges and stone viaducts that cross the landscape's lacework of glittering rivers and glaciers.
You can enjoy views into the valleys and canyons as the train crosses the many old stone-viaducts.
But the researchers found that the peak flow occurred about four miles downstream, where a stone railroad viaduct acted as a second dam, creating a huge temporary reservoir behind it.
A quick stroll west, under the stone arches of the northern Park Avenue viaduct and through the projects on Madison, brings me to El Museo del Barrio, which has been challenged by a local group called Nuestro Museo Action Committee that feels the museum, founded by local Puerto Rican activists in 1969, has neglected the neighborhood to focus on the high art of Latin America.
This is your museum of stones, assembled in matchbox and tin, collected from roadside, culvert, and viaduct, battlefield, threshing floor, basilica, abattoir, stones loosened by… Although you mention Venice,.
Then we settled into one of the newer carriages -- some are vintage 1920's stock -- for a magnificent train ride, along almost 50 miles of track, through 12 tunnels and across an impressive viaduct, all carved from the stone-strewn hillsides.
Architects Patrick Berger and Jamine Galiano converted the viaduct's scores of brick-and-stone arches into a series of glass-fronted shops, galleries, art studios, furniture showrooms, cafés, and restaurants.
Plenty of equally impressive castles and country houses are visible from the train as it crosses 16 viaducts, 14 tunnels and more than 100 carved stone bridges.
