Arnold Arboretum
Arnold Arboretum is a botanical research institution and public park in Boston, Massachusetts. Established in 1872, it serves as Harvard University's living collection of woody plants.
- Must see
- Nature site
- Boston
Country guide
At 9,833,520 km² the United States has the fourth-largest land area in the world, and its 50 states and federal district span enough longitude that the ordinary...
Photograph · Tuxyso · CC BY-SA 3.0
Reviewed by Elena Voss · Roavina Travel Editor
At 9,833,520 km² the United States has the fourth-largest land area in the world, and its 50 states and federal district span enough longitude that the ordinary clock runs from UTC−4 to UTC−10, with the territories reaching −12, +10 and +11. The 2025 population estimate is 341,784,857. Washington, D.C. is the capital and New York the largest city, but neither stands in for the rest of it. Distance is the planning problem here, not choice: a trip works far better as one region covered properly than as anything resembling a national tour.
Checked 2026-08-25
Every city catalogued in this country so far, ranked by how much there is to see.
Photograph · Fred Hsu on en.wikipedia · CC BY-SA 4.0
Photograph · J. Crocker · Attribution
Photograph · Alek Leckszas · CC BY-SA 4.0
Photograph · Carol M. Highsmith · Public domain
Photograph · Robert Linsdell from St. Andrews, Canada · CC BY 2.0
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Arnold Arboretum is a botanical research institution and public park in Boston, Massachusetts. Established in 1872, it serves as Harvard University's living collection of woody plants.
Flushing Meadows-Corona Park
Flushing Meadows-Corona Park is a large public park in the northern part of Queens, New York City. It was created for the 1939 New York World's Fair and later hosted the 1964 World's Fair.
U.S. National Arboretum
The United States National Arboretum is a large federal botanical research institution in Washington, D.C. Established by Congress in 1927, it operates under the U.S.
Battery Park
The Battery, historically known as Battery Park, is a public park located at the southern tip of Manhattan in New York City. It occupies the site of historic fortifications that once protected the harbor.
Fort Tryon Park is a public park in Upper Manhattan, set on elevated ground above the Hudson River and the New Jersey Palisades. Designed by Frederick Law Olmsted Jr.
The White House and President's Park
President's Park is a National Park Service landscape in Washington, D.C. encompassing the White House grounds and adjacent public spaces.
Washington Square Park is a public park in Greenwich Village, Manhattan. It occupies approximately 9.75 acres and is defined by its iconic Washington Square Arch at the northern edge.
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Las Vegas Springs Preserve
Las Vegas Springs Preserve is a cultural and natural-history campus built around the water source that supported Indigenous presence, early settlement and the growth of Las Vegas.
East Potomac Park is a peninsula park in Washington, D.C., extending into the Potomac River south of the Tidal Basin and the National Mall. Water surrounds several sides of the park, giving the landscape a distinctly open waterfront character.
Fort Mason is a former United States Army post located in San Francisco, California. The National Park Service now manages the site as part of the Golden Gate National Recreation Area.
Lincoln Park is a public green space on Capitol Hill in Washington, D.C. It is one of the city's oldest parks and carries the name of President Abraham Lincoln.
Little Island
Little Island at Pier 55 is an artificial island park in the Hudson River, connected to Manhattan's West Side. The structure sits on tulip-shaped concrete pilings rising from the water, creating an elevated landscape above the river.
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Snug Harbor Cultural Center and Botanical Garden
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Belmont-Paul Women's Equality National Monument
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Van Cortlandt Park is a major public park in the Bronx borough of New York City. It ranks among the largest parks in the city by land area.
Ten to fourteen days should focus on one US region: New York, Washington, and Boston work together by rail, while San Francisco, Los Angeles, and Las Vegas form a different trip. Miami, Orlando, and Honolulu each require separate travel time and should not be appended casually.
US admission depends on passport, visa status, and eligibility for the Visa Waiver Program and ESTA. Confirm both the Department of State visa guidance and Customs and Border Protection requirements for the actual route.
Domestic flights are often necessary between US regions, while Amtrak is strongest on the Northeast Corridor. A car is unnecessary in New York or Washington but can be useful in Los Angeles and beyond compact city centres.
April to May and September to October are broad shoulder-season references, not a national weather forecast. Florida heat, western wildfire conditions, hurricane exposure, and Hawaii's trans-Pacific logistics require destination-specific checks.
The United States uses the US dollar (USD). Card use is widespread, but taxes, deposits, and gratuities can make the final amount differ from the displayed base price; keep a second payment method for holds or terminal failures.
Dial 911 for police, fire, or medical emergencies in the United States. Type A and B sockets use 120 V; national tap-water safety is not recorded here, so consult the local utility or accommodation.