Which place is at the top of urban hierarchy since it has greatest influence on surrounding area?

It's tricky to definitively say one place is *always* at the top of the urban hierarchy because it depends on the specific context and what type of influence you're considering.

However, global cities are often considered to be at the top of the urban hierarchy.

Here's why:

* Economic Power: They are major centers of global finance, trade, and business, influencing economic activity worldwide.

* Innovation: They attract talent and resources, driving innovation and technological advancements that impact other cities.

* Cultural Influence: They are hubs of art, fashion, media, and entertainment, spreading cultural trends and ideas globally.

* Political Significance: They often house major international organizations, governments, and NGOs, influencing political decisions and international relations.

Some examples of global cities include:

* New York City

* London

* Tokyo

* Paris

* Hong Kong

Important Note:

The urban hierarchy isn't static. The influence of cities can shift over time depending on economic, political, and technological changes.