五十州、传奇公路与无穷多元
首都
Washington, D.C.
语言
English
货币
US Dollar (USD)
最佳时间
Varies by region — spring and fall are ideal
安全
提高警惕
根据实时政府旅行建议
差异较低 — 覆盖该目的地的 2 个政府来源评级基本一致。
更新于 2026年8月29日
United Kingdom: Contains public sector information from the Foreign, Commonwealth & Development Office (gov.uk) licensed under the Open Government Licence v3.0.
Canada: Contains information licensed under the Open Government Licence – Canada, published by Global Affairs Canada.
Australia: Contains material from the Department of Foreign Affairs and Trade's Smartraveller website – www.smartraveller.gov.au, provided under the Creative Commons Attribution licence.
ESTA (Electronic System for Travel Authorization) required for Visa Waiver Program countries (UK, Australia, most EU, Japan, etc.) for stays up to 90 days. Canadians enter visa-free. Many nationalities require a B1/B2 tourist visa.
ESTA (Electronic System for Travel Authorization) required for Visa Waiver Program countries (UK, Australia, most EU, Japan, etc.) for stays up to 90 days. Canadians enter visa-free. Many nationalities require a B1/B2 tourist visa.
ESTA: apply at esta.cbp.dhs.gov at least 72 hours before travel. Tourist visa (B1/B2): apply at US embassy with DS-160 form, interview, and supporting documents.
ESTA: usually approved within minutes to 72 hours. B1/B2 visa: weeks to months depending on embassy wait times.
ESTA: $21 USD. B1/B2 visa: $185 USD application fee.
签证要求因国籍而异并经常变化。旅行前请与你所在国家的大使馆或目的地官方移民机构核实。
Tourist areas in major cities are generally safe. Gun violence is a reality — mass shootings occur. Some urban neighborhoods have high crime. National parks and rural tourist areas are very safe. Healthcare is extremely expensive without insurance.
基于英国外交、联邦及发展事务部（FCDO）官方旅行建议，持续监测更新 · 数据来源
Tourist areas in major cities are generally safe. Gun violence is a reality — mass shootings occur. Some urban neighborhoods have high crime. National parks and rural tourist areas are very safe. Healthcare is extremely expensive without insurance.
Tap water is safe in most cities. Some rural areas and Flint, Michigan have had issues — check locally.
Gun violence is a unique risk. Healthcare costs can be devastating without insurance. Driving distances are massive — the US is huge. Natural disasters vary by region (hurricanes, tornadoes, earthquakes, wildfires).
Tipping is MANDATORY in practice. 18-20% at restaurants. $1-2 per drink at bars. 15-20% for taxis. $2-5 per night for hotel housekeeping. Not tipping is considered very rude.
Very casual. Americans dress down more than most countries. Jeans and sneakers are acceptable almost everywhere.
Christian majority but extremely diverse. Every religion represented. Very secular in daily life in most cities. Bible Belt (South) is more conservative.